Injection liquid containing graphene nanometer material for preventing pine nematodosis

A technology of pine wood nematode and nanomaterials, which is applied in the fields of injection and injection containing graphene nanomaterials, can solve the problems of affecting the transportation and transmission of active ingredients, affecting the efficacy of drugs, and narrowing the range of active ingredients, and achieving convenient use. It is practical, saves the cost of prevention and control, and improves the effect of prevention and control.

Inactive Publication Date: 2019-03-08
杭州敦和科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This injection has several disadvantages. First, because it is an emulsifiable emulsion system, the pesticide active ingredient in the preparation is in a molecular state, but when it is injected into the tree, it will be emulsified into particles with a particle size of 0.5-2 μm or even more. Large, and will continue to grow over time, which directly affects the transport of active ingredients in the plant; secondly, because solvents are needed to dissolve active ingredients, on the one hand, solvents are often harmful to plants and will dissolve plant cells; on the other hand, , the solvent used is generally a polar solvent. After the solvent is absorbed, the active ingredient is easily crystallized and precipitated, thus affecting the efficacy of the drug.
In addition, the solvent is generally weakly acidic or weakly alkaline, which often leads to various shortcomings such as degradation of active ingredients and solvent dissolution of packaging materials during long-term storage. If no solvent is used, the range of optional active ingredients is extremely narrow, limited to water-soluble active ingredients. , but cannot achieve the prevention and control of tree diseases and insect pests, and achieve the purpose of forest plant protection

Method used

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  • Injection liquid containing graphene nanometer material for preventing pine nematodosis
  • Injection liquid containing graphene nanometer material for preventing pine nematodosis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This example provides the preparation method and quality detection method of the injection injection containing graphene nanomaterials.

[0030] Injections include the following ingredients:

[0031] Active ingredients: 0.2-20.0, graphene nanomaterials 0.1-30. Take a certain amount of active ingredients such as abamectin, lambda-cyhalothrin, indoxacarb, emamectin, chlorpyrifos, dissolve in an organic solvent (such as acetone, ethyl acetate, sec-butyl acetate, DMF , DMSO, etc.), to prepare the active ingredient solution.

[0032] Graphene aqueous solution or graphene oxide aqueous solution, the weight ratio of reference active ingredient and graphene nano material is 100: (10-500) ratio, mixes with active ingredient solution, and mixed solution is stirred 24 hours in fume hood to make organic solvent completely Volatilize, or distill off the organic solvent under reduced pressure, add other components, and finally add water to make the active ingredient concentration q...

Embodiment 2

[0035] 1.8% Abamectin injection (the weight ratio of active ingredient to graphene nanomaterial is 0.9:1)

[0036] Weigh 18g of abamectin, slowly add 100ml of ethyl acetate, and stir at room temperature for 0.5 hour to obtain abamectin transparent solution.

[0037] Pour the above-mentioned abamectin transparent solution into 1000mL of an aqueous solution containing 20g of nano-graphene oxide, distill off the organic solvent under reduced pressure in a fume hood, weigh the remaining solution weight, and add water to make the active ingredient avermectin Concentration is qualified, even if make 1.8% abamectin injection.

[0038] The results showed that the 1.8% abamectin injection can be stably dispersed in aqueous solution and has good thermal stability.

Embodiment 3

[0040] 1% emamectin injection (the weight ratio of active ingredient to graphene oxide nanomaterial is 1:0.5)

[0041] Weigh 2 g of emamectin, slowly add 20 ml of acetone, and stir at room temperature for 5 minutes to obtain a transparent emamectin solution.

[0042] Pour the above-mentioned emamectin transparent solution into 200mL of an aqueous solution containing 1g of nano-graphene oxide, distill out acetone under reduced pressure in a fume hood, then add 12 grams of fatty alcohol polyoxyethylene ether and 16 grams of polyether, Finally, a certain amount of water was added to make the concentration of the active ingredient emamectin qualified, and 1% emamectin injection was prepared.

[0043] The results showed that 1% emamectin injection can be stably dispersed in aqueous solution and has good thermal stability.

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Abstract

The invention discloses a tree trunk injection liquid containing a graphene nanometer material for preventing pine nematodosis. The tree trunk injection liquid containing the graphene nanometer material is prepared from the following raw materials in percentage by mass: 0.2 to 20.0% of active components, and 0.1 to 30% of graphene nanometer material, wherein the weight ratio of the active components to the graphene nanometer material is 100:(10 to 500); the active components comprise antibiotic insecticide; the antibiotic insecticide is selected from one or more of emamectin benzoate, abamectin, spinosad, spinetoram and ivermectin. The tree trunk injection liquid is applied to being injected into the tree trunk to prevent and control multiple types of pests and diseases of trees, and has the characteristics that the cost is low, the preventing effect is high, and the application range is broad; the tree trunk injection liquid is suitable for preventing and controlling the pests and diseases of the trees, especially for preventing and controlling the boring insects of monochamus alternatus and the like of the pine, and preventing and controlling pine nematodes, so as to prevent thepine nematodosis.

Description

technical field [0001] The invention belongs to the injection injection in the technical field of pesticides, in particular, it is an injection injection containing graphene nanomaterials for preventing pine wood nematode disease. Background technique [0002] Pine wood nematode in my country can cause pine trees to die within dozens of days after infecting them, which is a devastating forestry disaster. The pine wood nematode is mainly transmitted by Monochamus alternatus. The peak period of adult eclosion of Monochamus alternatus is from May to August. During the process of migrating after eclosion, feeding on twigs, and laying eggs in grooves, B. xylophilus fell from the respiratory tract of Monochamus alternatus into the grooves, and quickly penetrated into the xylem of pine trees. [0003] The larvae of Monochamus alternatus are borer pests, which feed on the pine woody tissue and are symbiotic pests with B. xylophilus. Applying pesticides from the outside of the pine ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N43/90A01N43/22A01N51/00A01N53/08A01P5/00A01P7/04
CPCA01N25/04A01N43/22A01N43/90A01N51/00A01N53/00
Inventor 肖琳赵鲜梅
Owner 杭州敦和科技有限公司
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