CN113545348A

CN113545348A - Preparation method of monochamus alternatus compound solid repellent

Info

Publication number: CN113545348A
Application number: CN202110398463.8A
Authority: CN
Inventors: 徐福元; 柴忠心; 陈凤毛; 江雪峰; 刘帅; 秦峰
Original assignee: Xiuning County Forestry Pest Control And Quarantine Station; Nanjing Shengxing Harmful Biological Control Technology Co ltd; Nanjing Forestry University
Current assignee: Xiuning County Forestry Pest Control And Quarantine Station; Nanjing Shengxing Harmful Biological Control Technology Co ltd; Nanjing Forestry University
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-10-26

Abstract

The invention discloses a preparation method of a monochamus alternatus compound solid repellent, which comprises the following preparation components in percentage: 10 to 30 percent of estragole, 5 to 25 percent of cinnamaldehyde, 30 to 60 percent of alcohol and 1 to 10 percent of Tween 80 emulsifier; compounding the plant essential oil in proportion, placing the plant essential oil in a container, and stirring to obtain a mixed solution; the curing process of the invention is as follows: taking 200ml of the mixed solution in the second step, adding 0-10g of stearic acid and 0-10ml of isopropyl palmitate, mixing, and heating to 55-70 ℃; under the condition of stirring, slowly adding an aqueous alkali solution dissolved in water to prepare the compound solid repellent, the formula of the compound solid repellent has a high repellent effect on monochamus alternatus imagoes, and a solid production process is adopted.

Description

Preparation method of monochamus alternatus compound solid repellent

Technical Field

The invention belongs to the technical field of pest control, and particularly relates to a preparation method of a monochamus alternatus compound solid repellent.

Background

Pine wood nematode is the causative agent of pine wood destructive disease-pine wood nematode disease. The propagation medium discovers new varieties of spruce champion and the like besides monochamus alternatus, the harm objects are expanded from the past pinus massoniana and black pine to pine varieties of Korean pine, larch and the like, the epidemic situation directly threatens the safety of pine forest resources of nearly 9 hundred million acres in China, the pine forest resources are seriously damaged, and the economic loss is huge. The occurrence and the spread of the bursaphelenchus xylophilus are closely related to host plants and vector insects. The most effective way to control the pine wilt disease at present is to control the occurrence and harm of vector insects so as to achieve the purpose of controlling the pine wilt disease.

With the increasing quality of life and environment, the demand of the insect repellent is increasing, and although the insect repellent cannot poison pests, the insect repellent has special smell which can enable the pests to escape or repel the pests. Most are active chemical substances produced by plants or artificially synthesized to repel insects. To protect the user's "pine trees" from pests. Meanwhile, the strategy of 'driving attraction' is enriched, and the functions of controlling pest population and biologically controlling are better played. The repellent is an important means for preventing and transmitting diseases, and has important significance for the health of residents. For this reason, research and development applications should be further strengthened. Should continue to excavate and develop plant-derived repellents; creating new structure and variety by using modern technology; the method strengthens and researches the relationship between the physiology and behavior of insects and the repellent, clarifies the effect, improves the using method, improves the research quality and level, and leads the insect repellent to enter a more recent development stage in the comprehensive control of pests in China.

The existing monochamus alternatus repellent has the problems of high preparation cost, chemical residue and difficult degradation.

Disclosure of Invention

The invention aims to provide a preparation method of a monochamus alternatus compound solid repellent, and aims to solve the problems of high preparation cost, chemical residue and difficulty in degradation in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a monochamus alternatus compound solid repellent comprises the following steps:

the method comprises the following steps: preparing plant essential oil: the raw materials comprise: estragole, cinnamaldehyde, alcohol, tween 80 emulsifier; the components by weight percentage are as follows: 10 to 30 percent of estragole, 5 to 25 percent of cinnamaldehyde, 30 to 60 percent of alcohol and 1 to 10 percent of Tween 80 emulsifier;

step two: compounding and mixing: compounding the plant essential oil in the step one according to a proportion, placing the plant essential oil in a container, and stirring and mixing the plant essential oil and the container.

Step three: and (3) a curing process: taking 200ml of the mixed solution in the second step, adding 0-10g of stearic acid and 0-10ml of isopropyl palmitate, mixing, and heating to 55-70 ℃; under the condition of stirring, slowly adding the aqueous alkali dissolved in water to obtain the compound solid repellent.

In a preferred embodiment of the present invention, the weight volume ratio of the estragole is 10% to 30%, preferably 10% to 15%.

In a preferred embodiment of the present invention, the weight volume ratio of cinnamaldehyde is 5% to 25%, preferably 10% to 20%.

In a preferred embodiment of the present invention, the alcohol is present in an amount of 30 to 60% by weight, preferably 40 to 50% by weight.

As a preferred technical scheme of the invention, the weight volume ratio of the Tween 80 emulsifier is 1-20%, preferably 1-10%.

Compared with the prior art, the invention has the beneficial effects that:

the repellent effect of the compound solid repellent on the monochamus alternatus imagoes is obviously higher than that of the monochamus alternatus imagoes in the original liquid formula; the formula of the compound solid repellent disclosed by the invention has a high repellent effect on monochamus alternatus imagoes. Compared with liquid, the product produced by adopting the solid production process has the advantages of more complete volatilization, high volatilization rate, easy transportation and more stable components; the monochamus alternatus hope compound solid repellent is green, environment-friendly, free of residue, easy to degrade, low in cost, wide in application prospect and good in market popularization value.

Drawings

FIG. 1 is a flow chart of a method of the present invention;

FIG. 2 is a table of the ratios of plant essential oils in different examples;

FIG. 3 is a table showing the repelling effect of the outdoor compounded solid repellent on monochamus alternatus imagoes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1, the present invention provides a technical solution: a preparation method of a monochamus alternatus compound solid repellent comprises the following steps:

the method comprises the following steps: preparing plant essential oil: the raw materials comprise: estragole (4-allyl anisole ), cinnamaldehyde (Cinnamic aldehyde), alcohol, Tween 80 emulsifier; the components by weight percentage are as follows: 10-20% of estragole (4-allyl anisole ), 13-25% of cinnamaldehyde (Cinnamic aldehyde), 50-60% of alcohol and 1-2% of Tween 80 emulsifier;

Step three: and (3) a curing process: taking 200ml of the mixed solution in the second step, adding 2-8g of stearic acid and 2-6ml of palmitic acid isopropyl alcohol ester, mixing, and heating to 55-70 ℃; under the condition of stirring, slowly adding an alkali solution dissolved in water (2-4ml) to prepare the compound solid repellent.

Example 2

the method comprises the following steps: preparing plant essential oil: the raw materials comprise: estragole (4-allyl anisole ), cinnamaldehyde (Cinnamic aldehyde), alcohol, Tween 80 emulsifier; the components by weight percentage are as follows: 8-20% of estragole (4-allyl anisole ), 10-20% of cinnamaldehyde (Cinnamic aldehyde), 45-60% of alcohol and 1-2% of Tween 80 emulsifier;

The preparation method of the single-agent repellent comprises the following steps: 10-30% of estragole, 60-80% of solvent, 5-10% of tween 80 emulsifier and 5-10% of water. Placing a plant essential oil and other solutions in a container according to a certain proportion, stirring and mixing so as to obtain the invented product.

The repellent effect calculation method of the repellent comprises the following steps: the repellent effect of the repellent is calculated according to the trap rate counter-verification of the trap, and the calculation model is as follows:

or

Note: in the calculation model, CK and T are the number of heads of the traped adults of the trapper.

The number of adult monochamus alternatus hope trapped in the forest 1 of the compound solid repellent and the control CK is 18.75 and 138 respectively, and the forest repelling effect of the compound solid repellent on the monochamus alternatus hope adult is as high as 86.4 percent; the number of adult monochamus alternatus hopes trapped in the forest site 2 of the compound solid repellent and the control CK is 8 and 55 respectively, and the forest repellent effect of the compound solid repellent on the monochamus alternatus hopes is as high as 85.5%. Test results prove that the indoor and outdoor repellent effect of the compound solid repellent on monochamus alternatus imagoes is obviously higher than the forest repellent effect of the compound liquid repellent (as shown in figure 3).

The preparation method of the compound solid repellent formula of the invention is that the plant essential oil is compounded and mixed according to a proportion; the forest repelling effect of the compound solid repellent on monochamus alternatus imagoes is respectively as high as 85%; the repellent effect of the compound solid repellent on the monochamus alternatus imagoes is obviously higher than that of the compound liquid repellent on the monochamus alternatus imagoes. Therefore, the formula of the compound solid repellent has a high repelling effect on adult monochamus alternatus hope, has the characteristics of environmental protection, no residue, easy degradation, low cost, convenient use and the like, has a good application prospect, and is recommended to be popularized and applied in production.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A preparation method of a monochamus alternatus compound solid repellent is characterized by comprising the following steps: the configuration method comprises the following steps:

the method comprises the following steps: preparing plant essential oil: the raw materials comprise: estragole, cinnamaldehyde, alcohol, tween 80 emulsifier; the components by weight percentage are as follows: 10 to 30 percent of estragole, 5 to 25 percent of cinnamaldehyde, 30 to 60 percent of alcohol and 1 to 20 percent of Tween 8 emulsifier;

2. The preparation method of the monochamus alternatus compounded solid repellent according to claim 1, characterized by comprising the following steps: the weight volume ratio of the estragole is 10-30%, preferably 10-15%.

3. The preparation method of the monochamus alternatus compounded solid repellent according to claim 1, characterized by comprising the following steps: the weight volume ratio of the cinnamaldehyde is 5-25%, and preferably 10-20%.

4. The preparation method of the monochamus alternatus compounded solid repellent according to claim 1, characterized by comprising the following steps: the weight volume ratio of the alcohol is 30-60%, preferably 40-50%.

5. The preparation method of the monochamus alternatus compounded solid repellent according to claim 1, characterized by comprising the following steps: the weight volume ratio of the Tween 80 emulsifier is 1-20%, preferably 1-10%.