Method for Determining Virulence of Predator Mite

A measurement method, a technology of predatory mite, which is applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of high escape rate of predatory mite, strong self-activity, and difficult to guarantee the accuracy of results, so as to avoid suffocation and death, and is convenient to manufacture , the result is accurate and reliable
CN104165972BActive Publication Date: 2016-01-20CITRUS RES INST SOUTHWEST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CITRUS RES INST SOUTHWEST UNIV
Publication Date
2016-01-20

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Abstract

The invention discloses a predatory mite toxicity testing method which comprises the following steps: (1) keeping predatory mites at minus 20 DEG C for 5min so that the predatory mites are under a cold paralytic state, picking the predatory mites on a nylon screen above 300 meshes through a fine writing brush, fully soaking the nylon screen attached with the predatory mites in an agent to be tested and keeping for 5-10s; and then, lifting the nylon screen, placing on a piece of dry filter paper and absorbing residual solution; (2) opening an upper cover of a predatory mite toxicity testing device, putting the nylon screen with the predatory mites in the step 1 onto a mite supporting screen in the predatory mite toxicity testing device, covering the testing device, placing the device on a tray that contains water, breeding the tray in an artificial incubator, observing and recording death rate of the predatory mites after a period and calculating a toxicity testing result. The predatory mite toxicity testing method disclosed by the invention is simple and convenient to operate and is accurate and reliable in result.
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Description

Technical field

[0001] The invention relates to a technical method for monitoring the resistance of agricultural beneficial insects, in particular to a method for determining the toxicity of predatory mites. Background technique

[0002] Predator mites are one of the good natural enemies of biological control. They can prey on various pests (mites) such as spider mites, greenhouse whiteflies and thrips. It has the advantages of safety and no pollution, and has been widely used in fruit trees, tea and vegetables abroad. The prevention and control of other economic crop pests is also a natural enemy product promoted by the green prevention and control of crop pests (mites) in my country. However, chemical control is still an indispensable pest control measure in production. The application of chemical pesticides inevitably leads to the contradiction between chemical control and biological control. In particular, the application of broad-spectrum insecticides such as organophosphoru...

Claims

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