CN115812497B - Overwintering cold-proof method for grape powered by shallow geothermal energy - Google Patents
Overwintering cold-proof method for grape powered by shallow geothermal energy Download PDFInfo
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Abstract
The invention discloses a grape overwintering cold-proof method powered by shallow geothermal energy, and belongs to the technical field of grape overwintering cold-proof. The heat exchange system comprises a heat exchanger and a radiating pipe arranged at the upper part of the heat exchanger, the heat exchanger is arranged in a shallow water well, only water is not taken, heat exchange mediums are stored in the heat exchanger and the radiating pipe, a compression circulating pump is arranged on the radiating pipe and used for pushing the whole pipeline to circularly operate, and the heat preservation system comprises a reflecting film and the radiating pipe. The method is based on shallow geothermal energy, utilizes shallow groundwater to provide an external heat source, can continuously provide proper heat for grape growth under cold conditions, resists severe cold frost, also avoids the problems of dust raising, damage to shoot buds during soil emergence and the like of the traditional method for pressing branches and burying soil, and has the advantages of energy conservation, environmental protection and remarkable economic benefit.
Description
Technical Field
The invention belongs to the technical field of overwintering and cold-proofing of grapes, and particularly relates to a method for overwintering and cold-proofing of grapes by supplying heat to shallow groundwater.
Background
The planting area of the mountain foot grape of Ningxia Holly is the gold zone which is evaluated as the national wine original place protection area (geographical sign production area) after the mountain east tobacco stand and Hebei Changli. The foot of the congratula belongs to a mid-temperature zone continental arid and semiarid climate, and is characterized by short spring, late summer, early autumn, long winter, distinct four seasons, less rain and snow, strong evaporation and rich wind and sand. The total growth period accumulated temperature (more than or equal to 10 ℃) of the foot producing area of the greedy is 3400-3800 ℃ d, and the temperature is worse than 12-15 ℃ in daily; the precipitation amount is 150-240 mm; the sunshine duration is 1700-2000 hours; the frost-free period is 160-180 days. High effective accumulated temperature, short frost-free period, large day-night temperature difference, quick crop maturation, high sugar content, drought, less rain and convenient irrigation close to yellow river. Strong illumination, strong visible light and ultraviolet light, large light quality difference and less grape diseases and insect pests. However, the grape in the whole production area needs to be buried in soil for winter protection, and the protection effect and the working hour cost are poor.
According to meteorological data analysis, since the wine grapes are developed in a large area in Ningxia, serious low-temperature freeze injury occurs basically every 8-10 years, light-to-moderate low-temperature freeze injury occurs in 3-5 years, and frost damage occurs in spring and autumn, so that the influence range is unequal. Common cold-proof and freezing-proof methods at home and abroad include a fumigation method, a spray irrigation method, a fan method, a diffuse (ditch) irrigation method and a covering method. The overwintering cold-proof and antifreezing measures of the Ningxia grapes are mainly solved by embedding soil by means of pruning, so that time and labor are wasted, the grape stems and the rhizomes are easily damaged, and a new method is urgently needed to replace the existing conventional method.
Disclosure of Invention
In view of this, in order to solve the technical problems in the background art, it is necessary to provide a method for overwintering and cold-proof of grape powered by shallow geothermal energy, and the overwintering and cold-proof of grape is realized by taking heat without taking water.
In order to achieve the above object, the present invention is realized by the following technical scheme:
the utility model provides a grape winter protection cold-proof method of shallow geothermal energy supply, the winter protection method adopts grape winter protection cold-proof system to get the heat of groundwater for grape winter protection, grape winter protection cold-proof system includes heat transfer system, heat preservation system and shallow water well, its characterized in that: the heat exchange system comprises a heat exchanger and a radiating pipe arranged at the upper part of the heat exchanger, the heat exchanger is arranged below the water surface in the shallow water well, heat exchange mediums are stored in the heat exchanger and the radiating pipe, and a compression circulating pump is arranged on the radiating pipe to push the whole pipeline to circularly operate;
The heat preservation system comprises a reflecting film, the reflecting film is covered on grape vine, and the radiating pipe is paved at the lower part of the reflecting film.
Further, in a newly built vineyard, the radiating pipes are paved at a proper depth of the roots of the grapes to be cultivated, and the radiating pipes are also paved on the ground after being paved; in old vineyards, cooling pipes are laid on the soil surface close to the vines.
Further, a water supplementing barrel and a compression circulating pump are sequentially arranged on a water inlet pipe at one side of the radiating pipe, which is close to the shallow water well; and an exhaust valve is also arranged on the radiating pipe and is used for exhausting when the heat exchange solution flows unsmoothly.
Furthermore, the heat exchanger is a U-shaped copper pipe, the water inlet pipe end and the water outlet pipe end of the radiating pipe are arranged on the upper part of the U-shaped copper pipe, and the water inlet pipe end and the water outlet pipe end are directly connected through internal wires.
Further, the reflecting film is a geothermal reflecting film, and the geothermal reflecting film is pearl cotton wrapped by an aluminum film.
Further, the radiating pipe is a PERT pipe.
Further, the shallow water well depth is more than 8m, the diameter of the well mouth is 150-250 mm, the inner wall of the well is provided with a PVC pipe with the outer diameter of 130-220 mm, and the pipe wall at the bottom of the PVC pipe is provided with holes with uniform density and is wrapped with a layer of compact gauze.
Further, the heat exchange medium is CaCl 2 solution.
Furthermore, the U-shaped copper pipe is bilaterally symmetrical, and the unilateral length is 2-3 m.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. According to the invention, the grape vine is covered by the basic reflecting film, so that the moisture of grape branches in the sleep period can be prevented from being drained by strong wind in autumn and winter in northwest areas, the moisture content of the grape branches is reduced, the heat provided by the radiating pipes can be locked, the grape vine is assisted to resist external coldness by the heat provided by the pipelines, and the grape vine is safe in cold weather. After the outdoor temperature rise in spring, the traditional soil burying operation is carried out, and the temperature rise in the row is delayed by the soil covering effect, so that the grape growth and germination are slowed down while the late frost is resisted. In the invention, the cover reflective film can isolate invasion of cold frost and the like, and the heat radiated by the laid radiating pipes can promote normal germination of grapes, so that the normal physiological indexes of the grapes are ensured. The covering in the invention is easy to remove, can be repeatedly used, is safe and environment-friendly, and solves the disadvantages of labor and time consuming of conventional earthing covering, soil removing and branch removing.
2. The invention is green, environment-friendly and energy-saving, provides an external heat source based on shallow groundwater, can continuously provide heat for grapes under cold conditions, resists severe cold frost, and is suitable for safe and overwintering growth microclimate constructed for grape plants under the covering environment. Compared with other overwintering cold-proof technologies, the cold-proof effect is obviously improved, the practicability is stronger, and the protection time selectivity is high. The application of the invention can advance and delay the exposure time of grape plants, has remarkable effect of preventing and treating early spring cold and late frost, and ensures the growth safety and physiological nutrition requirements of grape plants after soil emergence.
3. The invention has good economy, and once paved, the geothermal reflecting film can be stacked and stored after the weather is warmed up and can be used continuously in the next year without spending a large amount of expenses for maintenance and supplement. According to the previous experimental study, the economic conservation estimation is 50% higher than that of the traditional method. The geothermal reflecting film recommended to be used in the invention has good heat preservation and moisture preservation, can effectively stop the invasion of low temperature outside and wind sand on grapes, does not need a large amount of soil to cultivate root and burying branches, can effectively protect the surface ecology, prevents the lifting Sha Qichen and achieves the aims of ecology overwintering and organic planting.
4. The invention can advance and delay the unearthing date of grape plants, can advance the growing period of grape by about 2-3 weeks in cold sudden drop weather and 'spring cold' weather, and can completely ensure that grape plants are prevented from being frozen.
Drawings
FIG. 1 is a schematic diagram of a heat exchange system arrangement in accordance with the present invention;
FIG. 2 is a schematic cross-sectional view of a thermal insulation system according to the present invention;
FIG. 3 is a schematic view of a water replenishing barrel according to the present invention;
Fig. 4 is a schematic structural view of a heat exchanger according to the present invention.
In the figure: 1. a heat exchange system; 11. a heat exchanger; 12. a heat radiating pipe; 13. a water supplementing barrel; 131. a ball valve; 14. a compression circulation pump; 2. a thermal insulation system; 21. a reflective film; 22. pressing soil; 3. shallow water well.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 4, the present invention provides a technical solution:
the grape overwintering cold-proof method powered by shallow geothermal energy adopts a grape overwintering cold-proof system to exchange heat of groundwater for grape overwintering cold-proof, the grape overwintering cold-proof system comprises a heat exchange system 1, a heat preservation system 2 and a shallow water well 3, the heat of the shallow groundwater is exchanged through the heat exchange system 1, and the heat is stored through the heat preservation system 2, namely, the heat of the shallow groundwater is utilized to prevent the grape from being frozen;
As shown in fig. 1 and 4, the heat exchange system 1 includes a heat exchanger 11 and a heat dissipation tube 12 installed at the upper part of the heat exchanger 11, the heat exchanger 11 is placed below the water surface in the shallow water well 3, heat exchange media are stored in the heat exchanger 11 and the heat dissipation tube 12, the temperature of the shallow water well 3 in winter is higher, generally more than 10 ℃, the heat exchange media are installed below the water surface and can contact with water for heat exchange in a large range, the heat exchange media in the heat exchanger 11 are lifted under the influence of the groundwater temperature, a compression circulation pump 14 is installed on the heat dissipation tube 12, the heat exchange media circulate in the heat dissipation tube 12 under the action of the compression circulation pump 14, the whole pipeline is pushed to circulate, and the heat dissipation capacity is outwards expanded through the heat dissipation tube 12.
As shown in fig. 2, the heat preservation system 2 includes a reflective film 21, the reflective film 21 is covered on grape vine, sealed by soil 22, and the radiating pipe 12 is laid at the lower part of the reflective film 21. The outer edge of the reflective film 21 is covered by the compressed soil 22, preventing heat loss in the covered row, and protecting the reflective film 21 from being blown open by strong wind.
The embodiment of the invention specifically comprises the following steps:
in a newly built vineyard, according to a specific grape cultivation mode (deep ditch planting and shallow ditch deep planting), the radiating pipe 12 is paved at a proper depth of the root of the grape vine to be cultivated, generally 13 cm-16 cm, preferably 15cm, and the radiating pipe 12 is also paved on the ground after being paved; in older vineyards, the cooling pipes 12 are laid on the surface of the soil adjacent to the vines, and the number of pipes laid in particular can be adjusted according to the amount of heat required.
Through setting up reflective coating 21, laying cooling tube 12 and covering at the outside soil 22 of reflective coating 21, can effectively prevent the heat dissipation, reflective coating 21 prevents outside cold air frostbite grape on the one hand, prevents the heat dissipation under the membrane on the one hand, continuously emits heat through the heat transfer medium of cooling tube 12 inside flow for prevent that the grape from receiving the freeze. Besides the pipelines under the membrane, other pipelines are wrapped by heat-insulating cotton and are properly wound by a binding belt, so that heat loss is reduced.
The heat exchanger 11 of the present invention may be in various forms, such as a conventional U-shaped tube, a spiral tube, a fin tube, etc., and may have a heat exchanging effect, and is not limited to the present invention. The heat exchange medium can also be selected according to actual needs, and the principle of low price and no pollution to the environment by waste liquid is adopted.
The embodiment of the invention specifically comprises the following steps:
As shown in fig. 1 and 3, a water supplementing barrel 13 and a compression circulating pump 14 are sequentially installed on a water inlet pipe of one side of the radiating pipe 12, which is close to the shallow water well 3, namely, the water inlet pipe is sequentially connected with a water inlet and a water outlet of the water supplementing barrel 13, and a water inlet and a water outlet of the compression circulating pump 14. The ball valve 131 is preferably arranged at the water inlet and outlet, so that the maintenance is convenient.
The radiating pipe 12 is provided with a water inlet pipe and a water outlet pipe, the water supplementing barrel 13 is arranged on the water inlet pipe to prevent the pipeline from flowing and leaking for a long time, so that the compression circulating pump 14 idles, and the water supplementing barrel 13 is added to supplement heat exchange medium in the pipeline, prevent the heat exchange medium from settling and eliminate bubbles in the pipeline. The compression circulation pump 14 is installed to accelerate the flow of the heat exchange medium, promote heat exchange during extremely cold periods, and avoid freezing of the grapes due to insufficient heat exchange. In order to prevent heat loss, a layer of heat preservation cotton should be wrapped outside the water supplementing barrel 13, so that the direct exposed part is reduced, the heat storage is ensured, and the loss is reduced. In addition, the radiating pipe 12 should be provided with an exhaust valve for exhausting when the heat exchange medium flows poorly.
In a preferred embodiment, the water outlet of the water replenishing barrel 13 is located at the position 10cm from the bottom of the water replenishing barrel 13, the water inlet of the water replenishing barrel 13 is located at the position 10cm from the barrel opening above the water replenishing barrel 13, ball valves 131 are installed at the water inlet and outlet, an exhaust valve is installed at a proper position on the heat dissipating tube 12, the power of the compression circulating pump 14 is 150W, the voltage is 220V, the rotating speed is 2800r/min, the rated lift is 20m, and the maximum flow is 12L/min.
The embodiment of the invention specifically comprises the following steps:
As shown in fig. 4, the heat exchanger 11 is a U-shaped copper pipe, the water inlet pipe end and the water outlet pipe end of the radiating pipe 12 are installed on the upper portion of the U-shaped copper pipe, the two are directly connected by internal wires, the heat conductivity of the copper pipe is good, the heat transfer is convenient, and the connection of the internal wires is convenient.
In a preferred embodiment, the selected copper tube has a thermal conductivity of 401W/mK and is connected to the radiating tube 12 by screws welded to the water inlet and outlet of the copper tube.
The embodiment of the invention specifically comprises the following steps:
the reflecting film 21 is a geothermal reflecting film, which is pearl cotton wrapped by an aluminum film, to prevent heat loss and cool air from entering. The size, the heat conductivity coefficient and the elongation at break of the geothermal reflecting film are selected according to actual needs, the grape stems can be required to be covered completely, and the two ends can be covered by the soil 22, so that the geothermal reflecting film is durable.
In a preferred embodiment, the geothermal reflecting film has a thickness of 6mm, a width of 2m, and a length selected according to the land. Other covering materials with good heat preservation effect can be used.
The embodiment of the invention specifically comprises the following steps:
the radiating pipe 12 is a PERT pipe.
The PERT pipe has good stability, pressure resistance, thermal creep resistance and thermal conductivity, can resist hydrostatic pressure for a long time, and can be safely used for more than 50 years under the conditions of 70 ℃ and 0.8 MPa. The PERT pipeline is flexible and easy to connect, and is convenient to construct. The PERT pipe is soft in texture, low in construction cost and small in bending radius, stress of a bending part can be quickly relaxed, and damage to a pipeline caused by stress concentration in the using process can be avoided. PERT pipe can be connected by hot melting, and easy maintenance, corrosion resistance are good, and the security is high. The PERT pipe has better rust resistance and acid and alkali resistance than a metal pipe, is not easy to scale and is convenient to clean. The PERT waste pipe can be melted and recycled, and has environmental protection.
In a preferred embodiment, the radiating pipe 12 is a PERT pipe having a diameter of 20 mm.
The embodiment of the invention specifically comprises the following steps:
The shallow water well 3 has a depth of more than 8m, the diameter of the well mouth is 150-250 mm, the inner wall of the well is provided with a PVC pipe with an outer diameter of 130-220 mm, the wall surface of the pipe wall at the position of 3-5m at the bottom of the PVC pipe is provided with holes with uniform density, and a layer of compact gauze is wrapped.
In a preferred embodiment, the shallow water well 3 is 10m deep, the diameter of the well mouth is 200mm, a PVC pipe with the outer diameter of 160mm is arranged on the inner wall of the well, holes with uniform density are formed in the 3m of the bottom of the PVC pipe, and a layer of compact gauze is wrapped.
The embodiment of the invention specifically comprises the following steps:
The heat exchange medium is CaCl 2 solution, is not easy to freeze, and can prevent the flowing medium from solidifying in autumn and winter and can not exchange heat.
The embodiment of the invention specifically comprises the following steps:
the U-shaped copper pipe is bilaterally symmetrical, and the unilateral length is 2-3 m.
In a preferred embodiment, the U-shaped copper pipe is bilaterally symmetrical, the unilateral length is 2.4m, the inner diameter of the pipeline is 16mm, the outer diameter is 19mm, the wall thickness is 1.53mm, and the water inlet and the water outlet are directly connected through welded 1216×4 branch inner threads.
Specific embodiments and steps:
S1, shallow water well 3 is made: shallow water well 3 is 10m deep, and well head diameter 200mm, and the well inner wall is put and is the PVC pipe of external diameter 160mm, and the drilling of density uniformity is offered to 3m of PVC pipe bottom to wrap up one deck compact gauze.
S2, manufacturing a heat exchanger 11: the U-shaped copper tube is selected, the heat conductivity coefficient of the copper tube is 401W/mK, the U-shaped copper tube is bilaterally symmetrical, the unilateral length is 2.4m, the inner diameter of the pipeline is 16mm, the outer diameter is 19mm, the wall thickness is 1.53mm, and the water inlet and the water outlet are directly connected through 1216X 4 branch inner wires.
S3, installing radiating pipes 12: the radiating pipe 12 is a PERT pipe with the diameter of 20mm, and the water inlet pipe end and the water outlet pipe end of the radiating pipe 12 are arranged on the upper part of the U-shaped copper pipe and are connected through inner wires; a water supplementing barrel 13 and a compression circulating pump 14 are sequentially arranged on a water inlet pipe of one side of the radiating pipe 12, which is close to the shallow water well 3; the laying range of the reflecting film 21 is determined, the radiating pipe 12 inside the reflecting film 21 is laid at the root of grape vine, the rest of pipelines and the outside of the water supplementing barrel 13 are wrapped by heat preservation cotton, and the pipelines and the water supplementing barrel are properly wound by using a binding belt. The water outlet of the water supplementing barrel 13 is positioned at the height of 10cm from the bottom of the water supplementing barrel 13, the water inlet of the water supplementing barrel 13 is positioned at the height of 10cm from the barrel opening above the water supplementing barrel 13, ball valves 131 are arranged at the water inlet and the water outlet, the power of the compression circulating pump 14 is 150W, the voltage is 220V, the rotating speed is 2800r/min, the rated lift is 20m, the maximum flow is 12L/min, and a heat exchange medium CaCl 2 solution is filled into the water supplementing barrel. The exhaust valve is arranged at a proper position on the radiating pipe 12. And after the installation is finished, performing trial operation, and checking whether each interface leaks air.
S4, paving a reflecting film 21: the reflecting film 21 is directly paved on grape vine, the reflecting film 21 is a geothermal reflecting film, the reflecting film is made of pearl cotton wrapped by an aluminum film, the thickness is 6mm, the width is 2m, the length is 100m, and the outer side is covered by the soil 22.
S5, operating the system: the compression circulation pump 14 is started to exchange heat circularly.
Effect evaluation: through experiments of grape vineyards of Xixianwang grape wine Limited company in Ningxia Yongning county from 10 months 2021 to 4 months 2022, the soil temperature of the grape vine near the conventional soil-buried overwintering condition of an experiment control group is-3.23 ℃ when the outdoor air temperature is at least-21.4 ℃ (26 days 2021) during observation, the soil temperature of the grape vine is 1.56 ℃ and the grape vine temperature is 3.86 ℃. The temperature under the protection of the invention is 148.3 percent higher than the average temperature of the overwintering of the buried soil, and the heating time of the covered row is basically equal to that of the buried soil of a control group under the condition of pipeline heat supply, thereby not affecting the normal growth of the grape. Under the protection of the coverage and the internal heat source, the grape can germinate normally, and the damage of night frost caused by bad control of the time of removing soil and removing branches is avoided.
Calculated by the management of wine grapes with the concentration of 1 mu for 10 years, the overwintering cost of buried soil is as follows:
Irrigation cost: 8 (mu/year) ×20 (yuan/mu) ×10 (year) =1600 yuan
Cost of pre-buried soil: 1 (mu/year) ×60 (yuan/mu) ×10 (year) =600 yuan
The artificial cost for burying soil: 1 (mu/year) ×64 (yuan/mu) ×10 (year) =640 yuan
Cost of soil burying machinery: 1 (mu/year) ×150 (yuan/mu) ×10 (year) =1500 yuan
Seedling raising labor cost: 1 (mu/year) ×110 (yuan/mu) ×10 (year) =1100 yuan
Seedling raising mechanical cost: 1 (mu/year) ×150 (yuan/mu) ×10 (year) =1500 yuan
Stone picking cost: 1 (mu/year) ×136 (yuan/mu) ×10 (year) =1360 yuan
Loss of vine from accidental injury of grape vine: 500 (yuan/year) ×10 (years) =5000 yuan
Loss of yield reduction of grapes: 800 (yuan/year) ×10 (years) =8000 yuan
Total cost 1.68 ten thousand yuan
Compared with the cost of the method, the traditional method for embedding the soil by pressing the branches can be used for at least 10 years according to the ageing condition of the materials once paved, and the cost is as follows:
and (5) beating a heat exchange well: 500 (Yuan/kou) ×4 (kou) =2000 Yuan (calculated as the protective effect at the lowest temperature of the environment of 2021 year test zone-21 ℃)
PERT floor heating pipe: 3 (yuan/m) ×200 (m) =600
Hardware: 2 (element/m) ×260 (m) =520 element
Compression circulation pump: 220 (element/element) ×1 (element) =220 element
Circulating pump electricity fee: 50 (meta/year) ×10 (years) =500 meta
Reflection film: 7 (yuan/m) ×200 (m) =1400 yuan
Labor cost: 200 (Yuan/mu) ×1 (mu) =200 Yuan
The cost of the method is 5440 yuan, and the method can save 67.6 percent of cost. Once the method is paved, the method can be used for a long time with simple maintenance in the later period.
In summary, the present invention is only the preferred embodiments, but the scope of the invention is not limited thereto, and any person skilled in the art, within the scope of the present invention, should be covered by the protection scope of the present invention by equally replacing or changing the technical scheme and the inventive concept thereof.
Claims (2)
1. The utility model provides a grape winter protection cold-proof method of shallow geothermal energy supply, the winter protection method adopts grape winter protection cold-proof system to exchange the heat of groundwater for grape winter protection, grape winter protection cold-proof system includes heat transfer system (1), heat preservation system (2) and shallow water well (3), its characterized in that: the heat exchange system (1) comprises a heat exchanger (11) and a radiating pipe (12) arranged at the upper part of the heat exchanger (11), wherein the heat exchanger (11) is arranged below the water surface in a shallow water well (3), heat exchange media are stored in the heat exchanger (11) and the radiating pipe (12), the heat exchange media are CaCl 2 solution, the heat exchanger (11) is a U-shaped copper pipe, the water inlet pipe end and the water outlet pipe end of the radiating pipe (12) are arranged at the upper part of the U-shaped copper pipe and are directly connected by internal wires, and the U-shaped copper pipe is bilaterally symmetrical and has a single side length of 2-3 m; a compression circulating pump (14) is arranged on the radiating pipe (12) to push the whole pipeline to circularly operate; the heat preservation system (2) comprises a reflecting film (21), wherein the reflecting film (21) is directly covered on grape vine and sealed through soil pressing (22), the reflecting film (21) is a geothermal reflecting film, the geothermal reflecting film is pearl cotton wrapped by an aluminum film, the thickness of the geothermal reflecting film is 6mm, the width of the geothermal reflecting film is 2m, and the radiating pipe (12) is paved at the lower part of the reflecting film (21); in a newly built vineyard, the radiating pipes (12) are paved at a proper depth of the roots of the grapes to be cultivated, and the radiating pipes (12) are also paved on the ground after being paved; in an old vineyard, paving radiating pipes (12) on the soil surface close to vines; a water supplementing barrel (13) and a compression circulating pump (14) are sequentially arranged on a water inlet pipe of one side of the radiating pipe (12) close to the shallow water well (3); an exhaust valve is also arranged on the radiating pipe (12) and is used for exhausting when the heat exchange solution flows unsmoothly; the shallow water well (3) is 10m deep, the diameter of the well mouth is 150-250 mm, the inner wall of the well is provided with a PVC pipe with the outer diameter of 130-220 mm, the pipe wall at the bottom of the PVC pipe is provided with holes with uniform density, and a layer of compact gauze is wrapped.
2. The shallow geothermal powered grape overwintering method of claim 1, wherein: the radiating pipe (12) is a PERT pipe.
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| CN209845817U (en) * | 2019-03-21 | 2019-12-27 | 兰州兰石能源装备工程研究院有限公司 | Greenhouse whole-plant temperature control system with geothermal energy gradient utilization function |
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| CN202218542U (en) * | 2011-08-18 | 2012-05-16 | 王自成 | North daylight energy-saving greenhouse |
| CN203633259U (en) * | 2013-12-18 | 2014-06-11 | 江苏大学 | Plant frost-proof system |
| KR20170001282A (en) * | 2015-06-26 | 2017-01-04 | 조동환 | Vinyl House heating device By Geothermal Energy |
| CN207040369U (en) * | 2017-03-31 | 2018-02-27 | 潍坊昇君庄园有限公司 | Grape shed heating system |
| CN207436266U (en) * | 2017-11-16 | 2018-06-01 | 泉发建设股份有限公司 | A kind of pneumatic membrane building heat insulation and preservation device |
| KR20170137677A (en) * | 2017-11-28 | 2017-12-13 | 조동환 | Vinyl House heating device By Geothermal Energy Method and System |
| CN211241030U (en) * | 2019-10-17 | 2020-08-14 | 谢天宇 | Indoor planting and breeding temperature control and water collection system |
| CN111788967A (en) * | 2020-06-22 | 2020-10-20 | 威海神山葡萄科技股份有限公司 | Automatic constant temperature grape greenhouse |
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| CN209845817U (en) * | 2019-03-21 | 2019-12-27 | 兰州兰石能源装备工程研究院有限公司 | Greenhouse whole-plant temperature control system with geothermal energy gradient utilization function |
Non-Patent Citations (1)
| Title |
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| 葡萄薄膜温室简介;赵文东，王家珍;北方果树;19950331(第1期);18-20 * |
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