A kind of trapping agent for aphids and its application

A technology of aphid cocoons and attractants, applied in the direction of application, attracting pesticides, biocides, etc., can solve the problems of low efficiency and serious damage of tea aphids

Active Publication Date: 2018-05-08
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the damage caused by tea aphids is so serious that it is necessary to develop new ways to control the pests
In the natural state, the individuals of the aphids are dispersed to search for the host tea aphid, and the efficiency is low

Method used

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  • A kind of trapping agent for aphids and its application
  • A kind of trapping agent for aphids and its application
  • A kind of trapping agent for aphids and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1 Natural population dynamics of tea aphid

[0013] In 2013, the experimental tea garden of China Metrology Institute was selected, and the survey was conducted once every half month, with sampling at five points each time. Each sampling point was a 5-meter tea row, and 100 shoots were randomly checked, and 500 shoots were investigated each time. Leaf tea aphids The percentage of tea shoots with aphids on 20 heads was made figure 1 .

[0014] Depend on figure 1 It can be seen that the population of tea aphids in Hangzhou has two population peaks, one around May 1 and one around October 15, and the first peak is higher. During the investigation, it was found that tea buds germinated in Hangzhou for 4 rounds, and tea aphids had a significant phenological correlation with tea buds. When a new round of tea shoots appeared, there were winged tea aphids that migrated. Four obvious insect population peaks were formed on July 1, August 31 and October 15.

Embodiment 2

[0015] Example 2 The Attractive Effect of Tea Aphid Sex Pheromone on Aphididae in Tea Garden

[0016] Aphid sex pheromones nepetalin and nepetalactone were used as attractants on wool felt, 2,6-di-tert-butyl-4-methylphenol was added as antioxidant, and sealed in polyvinyl chloride plastic bags . Each lure contained 10 mg nepetalactone or nepetalactone, 1 mg 2,6-di-tert-butyl-4-methylphenol, and 90 μl n-hexane, and each lure as a control contained 1 mg 2,6 - Di-tert-butyl-4-methylphenol and 90 µl n-hexane. From May 15th to 31st, 2013, the number of aphids in tea gardens was high. On May 19, 2013, the tea garden in the mountain forest of Meijiawu Village, Hangzhou City was selected to use nepetalactone lures, nepetalol lures and control lures, and each lure was attached to a rapeseed yellow sticky board , the swatch is tied to a small bamboo pole, and the bamboo pole is inserted into the tea row with a distance of 10 m, and each lure is repeated 15 times. On May 26, the numb...

Embodiment 3

[0018] Example 3 Trapping tea aphids parasitic on Aphididae with trapping agents at the beginning of the tea aphid population

[0019] On April 20, 2014, the population of tea aphids entered its peak period, and an area of ​​5 667m 2 of tea gardens, of which 2 667m 2 Part of the tea garden is a trapping area, and the other part 2 667m 2 The tea garden was the control area, and the tea garden with a length of 20 m in the middle was the isolation zone. Sampling was carried out at five points in the trapping area and the control area respectively. Each sample point is a 10 m tea row, 100 tea shoots are randomly investigated, and the number of tea aphids on the second leaf under the buds is counted The number of tea shoots with aphids is 20. Then every 667 m in the trap area 2 Evenly place 20 lures of aphid bee attractants in the tea garden (the ratio of nepetalinol, nepetalactone, benzaldehyde and trans-2-hexenal in the attractant is 1:4.5:20:20), and the lures At...

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Abstract

The invention discloses an Aphidius sp. trapping agent and an application thereof and provides a trapping agent for Aphidius sp. which is an important natural enemy of Toxoptera auranntii Boyer. The trapping agent is prepared from Toxoptera auranntii Boyer sex pheromone neptalactone, nepetalactone, tee tree kairomone benzaldehyde and E-2-hexenal with the mass ratio being 1:(3.0-6.0):(15-25):(15-25) through mixing, a solution is prepared from the trapping agent, then dropwise added to wool felt and encapsulated in a polyvinyl chloride bag to be used as a lure, in two population peak periods of a Toxoptera auranntii Boyer population, the lure of the Aphidius sp. trapping agent is hung in the Toxoptera auranntii Boyer population in the full incidence beginning period before each peak period, a large quantity of Aphidius sp. are lured to be parasitic on the Toxoptera auranntii Boyer, the natural parasitic rate is greatly increased, the Toxoptera auranntii Boyer population density is reduced, and chemical control is avoided. A new way for controlling the Toxoptera auranntii Boyer is developed, the used Aphidius sp. trapping agent cannot pollute the environment and is free of residues and beneficial to protection and utilization of biodiversity of a tea garden, the dosage is at the milligram level and even the microgram level, the efficiency is high, and the cost is low.

Description

technical field [0001] The invention belongs to the field of plant protection, and relates to a trapping agent for aphids and its application in the process of trapping and trapping parasitic tea aphids of aphids in tea gardens. Background technique [0002] my country's tea garden area is 2.58 million hectares, accounting for 58% of the world's tea garden area. tea aphid Toxoptera auranntii Boyer is widely distributed in my country's tea area. The growing season is viviparous female aphids, most of which are wingless. In the middle and lower reaches of the Yangtze River, the peak population of insects usually occurs from late April to early and mid-May, and from September to October. Under the induction of factors such as short sunshine in autumn, sexual aphids appear after late October, and the male and female mate and lay fertilized eggs to survive the winter from mid-late November to mid-December. Aphids Aphidius sp. is an important parasitic natural enemy insect ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/12A01P19/00A01M1/02A01N35/04A01N35/02
Inventor 韩善捷祝愿韩宝瑜王梦馨
Owner CHINA JILIANG UNIV
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