CN109258400B - Preparation method of seedling growth medium capable of locking water and preserving fertilizer - Google Patents
Preparation method of seedling growth medium capable of locking water and preserving fertilizer Download PDFInfo
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- CN109258400B CN109258400B CN201811160223.9A CN201811160223A CN109258400B CN 109258400 B CN109258400 B CN 109258400B CN 201811160223 A CN201811160223 A CN 201811160223A CN 109258400 B CN109258400 B CN 109258400B
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A01G24/60—Apparatus for preparing growth substrates or culture media
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Abstract
The invention relates to a preparation method of a seedling growth medium with water locking and fertilizer retaining functions, in the preparation method of the growth medium, corn straws are directly mixed with other materials without being crushed by a crusher, the mixed basic materials are subjected to the steps of 'dispersing and mixing, conveying, extruding-forming', and three-stage dispersing, mixing and extruding procedures, the material forming rate is up to 90%, the formed seedling growth medium is not easy to crack after being soaked in water, and the root system of a seedling is easier to penetrate.
Description
Technical Field
The invention relates to the technical field of ecological restoration, in particular to a preparation method of a seedling growth medium.
Background
With the transitional development and utilization of natural resources by human beings, the ecological environment is seriously deteriorated, and the desertification land area is continuously enlarged. In order to prevent the continuous deterioration of the ecological environment, China has implemented a large number of ecological restoration projects including a pastoral and returning grass project, a returning grass project and a desertification grassland treatment project, but the survival rate and the growth of the restored species are limited, so that the phenomena of 'small and old trees' or large-area death occur. In order to improve the survival rate of the restored species and provide sufficient water and fertilizer nutrients for the nursery stocks for restoring the ecological environment, a preparation method of the nursery stock growth medium with the functions of locking water and keeping fertilizer has been developed, the nursery stock growth medium can meet the normal growth requirement of the nursery stocks in the sand, the survival rate of the nursery stocks in the sand is greatly improved, and the capability of restoring the ecological environment is enhanced.
In the existing plant protection method for the seedling growth base, corn straws are fully crushed and screened, then a proper amount of adhesive is added, and an extrusion molding process is adopted to prepare the degradable growth base.
Chinese patent publication No. CN125502A discloses a method for manufacturing a plant straw seedling raising container, which uses waste plant straw as raw material, and the waste plant straw is dried, crushed, classified, and heated and pressurized in a mold for molding. The preparation method requires that the crushing granularity of the plant straws is 0.4-5.0mm, the heating temperature of the die is 170 ℃ and 210 ℃, and the applied pressure is 10-15kg/cm2The requirements for crushing plant straws are high, the energy consumption is high, the plant straws need to be heated to a high temperature in the forming process, and the production cost is high.
In addition, in the method for preparing the growth medium, the seedling growth medium is prepared by the mixed material of the straw, the starch, the boric acid, the formaldehyde and the water through an extrusion forming process, and the straw material used for preparing the growth medium has strong rebound resilience, so that the formed growth medium has high compactness, and is easy to deform and crack in the transportation and use processes even after being formed, particularly in the rain and internal grouting processes. In order to enhance the compactness of the growth substrate, too high extrusion force needs to be applied to the mixed materials during the manufacturing process, so that the power consumption of the motor is huge, the cost cannot be controlled, and when the pressure for manufacturing the growth substrate is reduced, the growth substrate extruded and formed in the transportation process is easy to loose and deform, even completely disperse and cannot be used.
On the other hand, before the mixed materials for preparing the seedling growth base are fed into the growth base preparation device, the mixed materials are required to be sequentially put into a stirrer to be repeatedly stirred so that the materials are fully and uniformly mixed, otherwise, the straw is accumulated and cannot be formed. Meanwhile, in order to ensure the extrusion molding of the mixed materials, the motor is often burnt out and damaged due to excessively high extrusion pressure.
Therefore, the preparation method of the seedling growth base, which can improve the compactness and the forming rate of the seedling growth base, reduce the use damage rate of the growth base, has low cost and simple structure and has the functions of locking water and preserving fertilizer, is urgently needed.
Disclosure of Invention
In view of the above problems, the present invention aims to overcome the disadvantages in the prior art, and provide a method for preparing a seedling growth substrate, which can improve the compactness and the molding rate of the seedling growth substrate, reduce the damage rate of the growth substrate, and has the advantages of low cost, simple structure and water and fertilizer locking functions.
As shown in fig. 1, the preparation method of the seedling growth medium with water locking and fertilizer maintaining functions of the invention comprises the following steps:
(1) crushing plant straws to 5-20 cm;
(2) adding water into animal waste, plant straws and an adhesive to preliminarily mix into a basic raw material;
(3) conveying the basic raw materials to a first spiral extrusion mechanism through a conveying auger, scattering, mixing, conveying and extruding in the first spiral extrusion mechanism, and performing primary mixing extrusion;
(4) extruding and conveying the material subjected to the first extrusion molding to a second spiral extrusion mechanism, scattering, mixing, conveying and extruding in the second spiral extrusion mechanism, and performing secondary mixed extrusion;
(5) extruding and conveying the material subjected to the second extrusion molding to a third screw extrusion mechanism, scattering, mixing, conveying and extruding in the third screw extrusion mechanism, and performing three-stage mixing extrusion;
(6) conveying the mixed material after the three-stage mixed extrusion to a forming mechanism connected with the mixed material to prepare a continuous seedling growth substrate;
(7) and conveying the continuous seedling growth substrate to a cutting mechanism for cutting at a fixed length.
The first screw extrusion mechanism and the second screw extrusion mechanism, and the second screw extrusion mechanism and the third screw extrusion mechanism are respectively arranged in an angular cross manner, preferably in a vertical cross manner.
The humidity of the mixed raw materials is 60-80%. Optionally, the plant straws used by the invention can be directly used as basic raw materials to be mixed with other raw materials without a crushing step, so that the cost can be reduced and the process can be simplified.
Because the mixed material is subjected to three-stage mixing extrusion, each stage of mixing extrusion is subjected to the processes of scattering, mixing and re-extrusion forming of the forming material, the conveying direction of the forming material between each stage of mixing extrusion is continuously changed, the compactness and the forming rate of the seedling growth substrate are improved, and the produced seedling growth substrate can bear water soaking and showering without cracking and damage.
Preferably, the first screw extrusion mechanism and the second screw extrusion mechanism, and the second screw extrusion mechanism and the third screw extrusion mechanism are arranged vertically.
Preferably, the screw auger tail ends used in the first screw extrusion mechanism and the second screw extrusion mechanism are respectively provided with an extrusion hammer head, so that the materials can be fully mixed before entering the third screw extrusion mechanism through the steps of 'dispersing, mixing, conveying, extrusion molding-dispersing, mixing, conveying and extrusion molding' of the basic materials.
Preferably, the binder of the present invention is a modified starch.
The plant straw is preferably corn straw, wheat straw or a mixture of various straws; the animal waste in the present invention is preferably cow dung, sheep dung or a mixture of various animal wastes.
Preferably, the preparation method of the seedling growth substrate of the invention can comprise a plurality of spiral extrusion mechanisms so as to extrude the mixed material more fully, and when unbroken plant straws are used as the mixed material, the plant straws have good rebound resilience and poor forming effect, and at least three times of extrusion forming is needed.
The water-locking fertilizer-retaining seedling growth base prepared by extruding, mixing and molding for three or more times has good molding effect, is not scattered after being soaked in water, has good air permeability, is easy to penetrate through the root system of the seedling, has good water storage property, and can meet the requirements of water locking and fertilizer retaining of the seedling growth base.
The preparation device used by the preparation method of the water-locking and water-retaining seedling growth medium has the following technical scheme:
the invention relates to a device for preparing a seedling growth base with water and fertilizer locking functions, which comprises a rack, a feeding mechanism, a spiral extrusion mechanism, a forming mechanism and a cutting mechanism, wherein:
the spiral extrusion mechanism comprises a first spiral extrusion mechanism, a second spiral extrusion mechanism and a third spiral extrusion mechanism, wherein all stages of spiral extrusion mechanisms are mutually arranged in an angle cross manner, the material extrusion end of the first spiral extrusion mechanism is arranged close to the material input end of the second spiral extrusion mechanism, and the material extrusion end of the second spiral extrusion mechanism is arranged close to the material input end of the third spiral extrusion mechanism; the first spiral extrusion mechanism is communicated with the second spiral extrusion mechanism, and the second spiral extrusion mechanism is communicated with the third spiral extrusion mechanism. The mixed materials are stirred, mixed, conveyed and extruded by the screw extruder of the first screw extrusion mechanism, and primary mixed extrusion is carried out; the mixed material subjected to the primary mixing extrusion changes the conveying direction and enters a shell of a second screw extrusion mechanism, and is subjected to secondary mixing extrusion after being dispersed, mixed, conveyed and extruded again under the action of a screw extruder of the second screw extrusion mechanism; the mixed material after the second-stage mixed extrusion changes the conveying direction and enters a shell of a third screw extrusion mechanism, and is scattered, mixed, conveyed and extruded again under the action of a screw extruder of the third screw extrusion mechanism to perform third-stage mixed extrusion. Because the mixed material is subjected to three-stage mixing extrusion, each stage of mixing extrusion is subjected to the processes of scattering, mixing and re-extrusion forming of the forming material, the conveying direction of the forming material between each stage of mixing extrusion is continuously changed, the compactness and the forming rate of the seedling growth substrate are improved, and the produced seedling growth substrate can bear water soaking and showering without cracking and damage.
In addition, because the material is subjected to three-stage mixing extrusion, the material does not need to be stirred and mixed sufficiently before entering the feeding mechanism. Simultaneously, tertiary co-extrusion has destroyed the resilience force of straw, and the material compactness behind the multistage co-extrusion has restricted the resilience force of straw, and fashioned nursery stock growth base can not be damaged because of the resilience force of straw. Therefore, the three-stage mixed extrusion mode of the invention has no special requirements on the crushing degree of the straws, and the straws treated by the common combine harvester can be used as initial materials without special crushing and screening treatment.
The first screw extrusion mechanism, the second screw extrusion mechanism and the third screw extrusion mechanism are respectively provided with a corresponding motor, a speed reducing mechanism, a screw extruder and a screw extruder shell, the screw extruder is arranged in a cavity formed by the screw extruder shell, and the motor is connected with the screw extruder through the speed reducing mechanism of the motor; the arrangement of the motors and the speed reducing mechanisms facilitates the configuration of the motors and the speed reducing mechanisms which are suitable according to the torque required by each stage of the screw extruder, the pressure driven by a single motor is reduced, and the most economical power output mode is obtained through the matching of the power of the motors and the speed reducing ratio of the speed reducing mechanisms, so that the motors are not easy to damage and burn out, and meanwhile, the seedling growth substrate preparation device is more compact in structure.
The forming mechanism is connected with the screw extruder shell of the third screw extrusion mechanism, an extrusion part at the tail end of the screw extruder of the third screw extrusion mechanism partially extends out of the screw extruder shell, and the extrusion part partially penetrates into the cavity of the forming mechanism and partially coincides with the forming mechanism; the arrangement mode of the invention simplifies the structure of the forming mechanism, the inner cavity of the forming mechanism is used for forming the peripheral surface of the seedling growing base, the extruding part is used for forming the inner cavity of the seedling growing base, and a core used for forming the inner cavity of the seedling growing base does not need to be separately arranged.
The cutting mechanism is arranged at the outlet side of the forming mechanism and cuts the continuous growing substrate pushed out by the forming mechanism into a preset length.
Feed mechanism includes agitator motor, defeated material screw feeder, cylindrical shell, feed inlet, discharge gate, agitator motor with defeated material screw feeder is connected, and the drive defeated material screw feeder is rotatory, defeated material screw feeder sets up in the cavity that the shell formed, will the material of feed inlet department is carried extremely discharge gate department. The feeding structure can ensure that the materials after primary mixing are fully and uniformly mixed in the spiral conveying process, and saves manpower and material resources for fully mixing the materials.
The first spiral extrusion mechanism further comprises a feed inlet, a discharge port of the feeding mechanism is communicated with the feed inlet of the first spiral extrusion mechanism, and the feed inlet of the first spiral extrusion mechanism is arranged on the shell of the spiral extruder and close to a material input end of the spiral extruder. The mixed material passes through feed mechanism's feed inlet is carried to its discharge gate department through the rotation of carrying the screw feeder, via the feed inlet of screw extrusion mechanism carries among the screw extrusion mechanism, realize the material loading operation.
The forming mechanism is fixedly connected with the screw extruder shell of the third screw extrusion mechanism through a flange, and the cross section of an internal cavity formed by the forming mechanism can be in a shape suitable for seedling growth, such as a circle, a square, a hexagon and the like.
The cutting mechanism is provided with a cutter and a guide rail, and the cutter can reciprocate on the guide rail. After the mixed material is extruded and formed, the mixed material is prepared into a continuous seedling growth base through the forming mechanism, the seedling growth base is required to be cut into a preset length according to the specific requirements of planted seedlings, and in the process of cutting off the seedling growth base, the cutting machine moves together with the seedling growth base along the guide rail and keeps relatively static with the moving seedling growth base, so that the cutting saw blade is prevented from being damaged due to extrusion caused by the movement of the seedling growth base, and fixed-length cutting cannot be completed.
Compared with the prior art, the invention has the following advantages:
according to the preparation method of the water-locking fertilizer-retaining seedling growth base, the seedling growth base is formed by extruding, mixing and forming for three times or more, the forming effect of the seedling growth base is good, the seedling growth base is not scattered after being soaked in water, the air permeability is good, the root system of the seedling is easy to penetrate, the water storage property of the prepared seedling growth base is good, and the requirements of water locking and fertilizer retaining of the seedling growth base can be met.
Drawings
FIG. 1 is a flow chart of the preparation method of the water-locking fertilizer-retaining seedling growth substrate of the invention.
FIG. 2 is a schematic diagram of a device used in the method for preparing the water-locking fertilizer-retaining seedling growth base.
Detailed Description
The following detailed description of the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided for illustration of the present invention and are not intended to limit the scope of the present invention.
In one embodiment of the invention, the preparation method of the seedling growth medium with water locking and fertilizer maintaining functions comprises the following steps:
(1) crushing the plant straws to 10 cm;
(2) adding water into cow dung, corn straws and modified starch, and primarily mixing until the humidity is 70% of the basic raw materials;
(3) the first screw extrusion mechanism and the second screw extrusion mechanism as well as the second screw extrusion mechanism and the third screw extrusion mechanism are arranged vertically, the basic raw material is conveyed to the first screw extrusion mechanism through a conveying auger, and primary extrusion forming is carried out to obtain a primary extrusion mixed material;
(4) extruding and conveying the material subjected to the first extrusion molding to a second spiral extrusion mechanism, and performing second extrusion molding, wherein the first spiral extrusion mechanism is connected with the second spiral extrusion mechanism to obtain a secondary extrusion mixed material;
(5) extruding and conveying the material subjected to the second extrusion molding to a third screw extrusion mechanism, and carrying out third extrusion molding, wherein the second screw extrusion mechanism is connected with the third screw extrusion mechanism to obtain a three-stage extrusion mixed material;
(6) and conveying the growth substrate subjected to the three-stage extrusion molding to a molding cutting mechanism, and cutting to length.
In the preparation method of the seedling growth medium, the base material is subjected to the steps of dispersing, mixing, conveying, extruding-dispersing mixing, conveying, extruding-molding, the material molding effect is good, the molding rate is as high as 95%, and the prepared seedling growth medium is not easy to crack when being soaked in water and has excellent water storage performance.
In another embodiment of the invention, a preparation method of the water-locking and fertilizer-keeping seedling growth medium comprises the following steps:
(1) adding water into cow dung, wheat straws and modified starch, and primarily mixing until the humidity is 60% of the basic raw materials;
(2) arranging a first spiral extrusion mechanism and a second spiral extrusion mechanism, and arranging the second spiral extrusion mechanism and a third spiral extrusion mechanism at an included angle of 120 degrees, conveying the basic raw materials to the first spiral extrusion mechanism through a conveying auger, and performing primary extrusion forming to obtain a primary extrusion mixed material;
(3) extruding and conveying the material subjected to the first extrusion molding to a second spiral extrusion mechanism, and performing second extrusion molding, wherein the first spiral extrusion mechanism is connected with the second spiral extrusion mechanism to obtain a second extrusion mixed material;
(4) extruding and conveying the material subjected to the second extrusion molding to a third screw extrusion mechanism, and carrying out third extrusion molding, wherein the second screw extrusion mechanism is connected with the third screw extrusion mechanism to obtain a three-extrusion mixed material;
(5) and conveying the growth substrate subjected to the three-stage extrusion molding to a molding cutting mechanism, and cutting to length.
In the preparation method of the seedling growth medium, the corn straws are not crushed by a crusher and are directly mixed with other materials, the mixed base materials are subjected to the steps of 'dispersing and mixing, conveying, extruding-molding', the material molding rate is up to 90%, the molded seedling growth medium is not easy to crack after being soaked in water, and the root system of the seedling is easier to penetrate through.
The device used in the preparation method of the seedling growth base of the invention is briefly described below with reference to the attached figure 2.
As shown in fig. 2, the device for preparing a seedling growth substrate with water and fertilizer locking functions comprises a frame 1, a feeding mechanism, a spiral extrusion mechanism, a forming mechanism and a forming and cutting mechanism, wherein:
feed mechanism includes agitator motor 21, defeated material auger 22, cylindrical shell 23, feed inlet 24, discharge gate 25, agitator motor 21 with defeated material auger 22 is connected, and the drive defeated material auger 22 is rotatory, defeated material auger 22 sets up in the cavity that shell 23 formed, will the material of feed inlet 24 department is carried extremely discharge gate 25 department.
The discharge hole 25 is connected with a feed inlet (not shown in the figure) of the first screw extrusion mechanism, and the feed inlet of the first screw extrusion mechanism 31 is arranged on the screw extruder shell 40 and close to a material input end of the screw extruder 34. The mixed material is conveyed to a discharge port 25 of the feeding mechanism through a feed port 24 of the feeding mechanism through rotation of a conveying auger 22, and is conveyed into the screw extrusion mechanism through a feed port of the screw extrusion mechanism 31, so that the feeding operation is realized.
The screw extrusion mechanism comprises a first screw extrusion mechanism 31, a second screw extrusion mechanism 32 and a third screw extrusion mechanism 33, and all the screw extrusion mechanisms are mutually arranged in an angle cross manner. The first screw extrusion mechanism 31, the second screw extrusion mechanism 32 and the third screw extrusion mechanism 33 are respectively provided with a corresponding motor 38, a speed reducing mechanism 39, a screw extruder 34 and a screw extruder shell 40, the screw extrusion mechanism comprises a screw extrusion mixing section and an extrusion part, the screw extruder 34 is arranged in a cavity formed by the screw extruder shell 40, and the motor 38 is connected with the screw extruder 34 through the speed reducing mechanism 39; each spiral extrusion mechanism is independently provided with a corresponding motor and a corresponding speed reducing mechanism, the arrangement of the motors and the speed reducing mechanisms facilitates the configuration of the motors and the speed reducing mechanisms which are suitable according to the torque required by each level of spiral extruder, the pressure driven by a single motor is reduced, the most economical power output mode is obtained through the matching of the power of the motors and the speed reducing ratio of the speed reducing mechanisms, so that the motors are not easy to damage and burn out, and meanwhile, the seedling growth substrate preparation device is more compact in structure.
The material extruding end of the first screw extruding mechanism 31 is arranged adjacent to the material input end of the second screw extruding mechanism 32, and the material extruding end of the second screw extruding mechanism 32 is arranged adjacent to the material input end of the third screw extruding mechanism 33; the first screw extrusion mechanism 31 is communicated with the second screw extrusion mechanism 32, and the second screw extrusion mechanism 32 is communicated with the third screw extrusion mechanism 33. The mixed materials are stirred, mixed, conveyed and extruded by the screw extruder 34 of the first screw extrusion mechanism 31, and primary mixing extrusion is carried out; the mixed material after the first-stage mixing extrusion changes the conveying direction to enter a shell of a second spiral extrusion mechanism 32, and is subjected to second-stage mixing extrusion by scattering, mixing, conveying and extruding again under the action of a spiral extruder 34; the mixed material after the second-stage mixing extrusion enters a shell of a third screw extrusion mechanism 33 by changing the conveying direction, and is subjected to mixing, conveying and extrusion again under the action of a screw extruder 34, so as to perform third-stage mixing extrusion.
Because the mixed material is subjected to three-stage mixing extrusion, each stage of mixing extrusion is subjected to the processes of scattering, mixing and re-extrusion forming of the forming material, the conveying direction of the forming material between each stage of mixing extrusion is continuously changed, the compactness and the forming rate of the seedling growth substrate are improved, and the produced seedling growth substrate can bear water soaking and showering without cracking and damage.
Because the material is subjected to three-stage mixing extrusion, the material does not need to be stirred and mixed sufficiently before entering the feeding mechanism. Simultaneously, tertiary co-extrusion has destroyed the resilience force of straw, and the material compactness behind the multistage co-extrusion has restricted the resilience force of straw, and fashioned nursery stock growth base can not be damaged because of the resilience force of straw. Therefore, the three-stage mixed extrusion mode of the invention has no special requirements on the crushing degree of the straws, and the straws treated by the common combine harvester can be used as initial materials without special crushing and screening treatment.
The forming mechanism is connected with the screw extruder housing 40 of the third screw extruder mechanism 33, the extrusion part 11 at the tail end of the screw extruder 34 of the third screw extruder mechanism 33 partially extends out of the screw extruder housing, and the extrusion part 11 partially penetrates into the cavity of the forming mechanism and partially coincides with the forming mechanism; the arrangement mode of the invention simplifies the structure of the forming mechanism, the inner cavity of the forming mechanism is used for forming the peripheral surface of the seedling growing base, the extruding part is used for forming the inner cavity of the seedling growing base, and a core used for forming the inner cavity of the seedling growing base does not need to be separately arranged.
The forming mechanism is fixedly connected with the screw extruder shell 40 of the third screw extruding mechanism 33 through a flange, and the cross section of an internal cavity formed by the forming mechanism can be in a shape suitable for seedling growth, such as a circle, a square, a hexagon and the like.
The cutting mechanism is arranged at the outlet side of the forming mechanism and cuts the continuous growing substrate pushed out by the forming mechanism into a preset length. The cutting mechanism comprises a supporting device 13, a movable support 4, a guide rail mechanism 16, a growth substrate guide mechanism 17 and a bidirectional air pump 15 for pushing the movable support 4 to move along with the growth substrate. After the mixed material is extruded and formed, the mixed material is prepared into a continuous seedling growth base through the forming mechanism, the seedling growth base is required to be cut into a preset length according to the specific requirements of planted seedlings, and in the process of cutting off the seedling growth base, the cutting machine moves together with the seedling growth base along the guide rail and keeps relatively static with the moving seedling growth base, so that the cutting saw blade is prevented from being damaged due to extrusion caused by the movement of the seedling growth base, and fixed-length cutting cannot be completed.
Although the present invention has been described in detail with reference to the preferred embodiments, it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and the modifications and substitutions should be considered as within the protection scope of the present invention.
Claims (10)
1. A preparation method of a seedling growth medium with water locking and fertilizer preserving functions comprises the following steps:
(1) animal waste, plant straws and an adhesive are added with water and are primarily mixed into a basic raw material;
(2) conveying the basic raw materials to a first spiral extrusion mechanism through a conveying auger, scattering, mixing, conveying and extruding in the first spiral extrusion mechanism, and performing primary mixing extrusion;
(3) extruding and conveying the material subjected to the primary mixed extrusion molding to a second spiral extrusion mechanism, scattering, mixing, conveying and extruding in the second spiral extrusion mechanism, and performing secondary mixed extrusion;
(4) extruding and conveying the material subjected to the secondary extrusion molding to a third screw extrusion mechanism, scattering, mixing, conveying and extruding in the third screw extrusion mechanism, and performing tertiary mixing extrusion;
(5) conveying the mixed material after the three-stage mixed extrusion to a forming mechanism connected with the mixed material to prepare a continuous seedling growth substrate;
(6) conveying the continuous seedling growth substrate to a cutting mechanism for cutting at a fixed length;
the screw extrusion mechanism comprises a screw extrusion mixing section and an extrusion part.
2. The preparation method of the water-locking and fertilizer-maintaining seedling growth medium according to claim 1, characterized by comprising the following steps: and (4) performing at least one time of scattering, mixing, conveying and extruding after the step (4), and performing at least one time of mixing and extruding again.
3. The preparation method of the water-locking and fertilizer-maintaining seedling growth medium according to claim 1, characterized by comprising the following steps: the first spiral extrusion mechanism and the second spiral extrusion mechanism, and the second spiral extrusion mechanism and the third spiral extrusion mechanism are respectively arranged in an angle cross way.
4. The preparation method of the water-locking and fertilizer-maintaining seedling growth medium according to claim 1, characterized by comprising the following steps: the first spiral extrusion mechanism and the second spiral extrusion mechanism as well as the second spiral extrusion mechanism and the third spiral extrusion mechanism are respectively arranged in a mutually vertical and crossed way.
5. The method for preparing the seedling growth medium with water locking and fertilizer maintaining functions as claimed in any one of claims 1 to 4, wherein the method comprises the following steps: before the first step, the plant straws are crushed to 5-20 cm.
6. The method for preparing the seedling growth medium with water locking and fertilizer maintaining functions as claimed in any one of claims 1 to 4, wherein the method comprises the following steps: the humidity of the mixed raw materials is 60-80%.
7. The method for preparing the seedling growth medium with water locking and fertilizer maintaining functions as claimed in any one of claims 1 to 4, wherein the method comprises the following steps: the adhesive is modified starch.
8. The method for preparing the seedling growth medium with water locking and fertilizer maintaining functions as claimed in claim 7, wherein the method comprises the following steps: the plant straw is corn straw, wheat straw or a mixture thereof.
9. The preparation method of the water-locking and fertilizer-maintaining seedling growth medium according to claim 8, characterized in that: the animal manure is cow manure, sheep manure or a mixture thereof.
10. The method for preparing the seedling growth medium with water locking and fertilizer maintaining functions as claimed in any one of claims 1 to 4, wherein the method comprises the following steps: and the tail ends of the screw propellers used in the first screw extrusion mechanism and the second screw extrusion mechanism are provided with extrusion hammers.
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| WO2004009732A1 (en) * | 2002-07-22 | 2004-01-29 | Polwood Aussie Bark Pty Ltd | Plant growth medium |
| CN202680078U (en) * | 2012-05-03 | 2013-01-23 | 新疆农垦科学院 | Automatic feeding device for plug seedling production line |
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| CN1048616C (en) * | 1994-12-29 | 2000-01-26 | 西北农业大学 | Manufacture method of plant straw seedling culture container |
| JP2001120060A (en) * | 1999-10-29 | 2001-05-08 | Nippon Seiki Co Ltd | Bagging apparatus of culture medium |
| CN201450905U (en) * | 2009-03-24 | 2010-05-12 | 叶伟俊 | Automatic bag packing machine of edible fungus culture material |
| CN104067856B (en) * | 2014-06-27 | 2016-08-24 | 锁现民 | A kind of method and apparatus using solid, liquid fermentation tank Joint Production edible fungus stick |
| CN204272734U (en) * | 2014-12-04 | 2015-04-22 | 云南大本事农业科技发展有限责任公司 | A kind of sack filling machine for edible fungi culture stuff |
| CN206251682U (en) * | 2016-12-12 | 2017-06-16 | 云南农业大学 | A kind of corn nursery classification inoculation apparatus |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004009732A1 (en) * | 2002-07-22 | 2004-01-29 | Polwood Aussie Bark Pty Ltd | Plant growth medium |
| CN202680078U (en) * | 2012-05-03 | 2013-01-23 | 新疆农垦科学院 | Automatic feeding device for plug seedling production line |
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