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Spotted cutworm isotropic nano-fiber preparation

A technology of cutworms and nanofibers, applied to artificial filaments made of cellulose derivatives, fiber treatment, biocides, etc., can solve the problem of large amount of sex pheromones, male insects can't tell the true from the false, slow release The effect is not good and other problems, to achieve the effect of simple preparation method, high drug loading capacity, and easy to obtain raw materials

Inactive Publication Date: 2018-05-18
INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, sex pheromone distribution devices are generally installed in the prevention and control areas or sprayed in large quantities in the field. The smell of sex pheromones is everywhere in the air, making it difficult for males to distinguish between true and false, and unable to find females to mate.
Or because the antennae of male insects receive high concentrations of sex pheromones for a long time, they will be paralyzed and lose their sensitivity to the sex pheromones released by female insects. If the male and female insects cannot mate, they will not be able to reproduce and do harm.
The advantage of the fascination method is that it saves trouble and labor. The disadvantage is that the amount of sex pheromone is too large and the slow-release effect is not good. Effective throughout the control period

Method used

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  • Spotted cutworm isotropic nano-fiber preparation
  • Spotted cutworm isotropic nano-fiber preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 8

[0018] The preparation of embodiment 1 cutworm fan-oriented nanofiber

[0019] Dissolve cellulose acetate in acetone to form a 20% cellulose acetate solution, sonicate until it is completely dissolved, then add the sex pheromone of Scutellaria chinensis into the cellulose acetate solution at a speed of 500r / min Homogenize overnight with a magnetic stirrer, use a 5mL syringe pump to add the polymer solution to the electrospinning device at a rate of 0.05mL / min, and obtain a drug loading of 30%, a fiber diameter of 150-600nm, and a wrapping rate of 65% of cutworms are fascinated by nanofibers.

Embodiment 2

[0020] The preparation of embodiment 2 polymer nanofibers

[0021] Dissolve polycaprolactam in formic acid to form a 10% polycaprolactam solution, sonicate until it is completely dissolved, then add the sex pheromone of cutworm to the polycaprolactam solution, homogenize overnight with a magnetic stirrer at a speed of 500r / min, and use A 5mL syringe pump was used to add the polymer solution to the electrospinning device at a rate of 0.08mL / min, and to obtain a nano-spindle with a drug loading of 20%, a fiber diameter of 200-1000nm, and a wrapping rate of 70%. fiber.

Embodiment 3

[0022] Embodiment 3 Antenna potential test

[0023] In order to test the effect of different storage time on pheromone in pheromone nanofibers. Place the male cutworm in the refrigerator at 4°C for 5 minutes, carefully remove the complete antennae from the antenna socket with precision tweezers, cut off the base of the antennae caught by the tweezers with a sharp blade under a dissecting microscope, and cut off the end of the antennae In order to ensure the smooth flow of the current path during the test, the antenna was connected to the electrode with a glass pipette electrode with a small hole of 1.5 mm in diameter at the tip filled with 0.1M potassium chloride solution. During EAG measurement, the CS-55 stimulating airflow controller outputs continuous airflow and compensating airflow through the Y-shaped tube, overwash the gas cylinder, and then flow through the flowmeter and then pass through the steel pipe to reach the antennae, and the stimulating airflow passes through...

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Abstract

The invention discloses a spotted cutworm isotropic nano-fiber preparation and a preparation method thereof and belongs to the technical field of agrochemical preparation. The spotted cutworm isotropic nano-fiber preparation is polymer nano-fiber containing spotted cutworm sex pheromone. The preparation method provided by the invention is simple and convenient and is available in raw material. According to the preparation method, a used polymer has good environmental compatibility, is bio-degradable and does not have a residue risk; the prepared nano-fibers are high in mechanical strength, relatively small and uniform in particle size and relatively high in drug loading capacity, has a certain sustained release effect, prevents sprayed fields from being scoured by air flows and rainstorms,reduces the dosage of the spotted cutworm sex pheromone, prolongs the sustained release persistent period of the spotted cutworm sex pheromone, and can perform effective isotropy on the spotted cutworm at the same time. Reference for comprehensively treating the spotted cutworm is provided.

Description

technical field [0001] The invention belongs to the technical field of preparation of agricultural chemicals, and in particular relates to a directional nanofiber preparation of cutworms. Background technique [0002] Xestia c-nigrum (Linnaeus), belonging to Lepidoptera of Lepidoptera and Noctuidae of family Noctuidae, is an important root-cutting pest in agriculture and grassland. The larvae have feigned death, are nocturnal and have strong concealment. Distributed all over the world, it is seriously harmful in the United States, Japan and other countries. It can harm tobacco, tomato, cabbage, grapes and other food habits. In my country, it mainly harms more than 100 kinds of plants such as food crops, cotton, tobacco, vegetables, and medicinal plants. , known to harm the seedlings of a variety of plants, and its geographical distribution spreads all over the country. It has been reported that the cutworm has a certain migratory habit, and migratory pests are difficult to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/10D01F6/92D01F6/94D01F6/90D01F2/28D01D5/00A01N37/02A01N25/34A01N25/10A01P19/00
Inventor 翁爱珍宁君王安佳王留洋折冬梅梅向东
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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