Method for separating and purifying mummified aphids of aphid parasites

Abstract

The invention discloses a method for separating and purifying mummified aphids of aphid parasites. The method comprises the following steps: (1) preparing mummified aphids to be separated; (2) preparing a carrier 1; (3) performing primary separation and purification; (4) collecting the purified mummified aphids; (5) continuing to culture a material of the carrier 1; (6) preparing a carrier 2; (7) performing secondary separation and purification; (8) collecting the high-purity mummified aphids; and (9) continuing to breed the material of the carrier 2. According to the method, biological characteristics of aphid parasites and aphids are combined, parasitic aphids and aphids are transferred due to plant withering, mummified aphids left on an original carrier can be collected and packaged, and the transferred aphids can be continuously bred. According to the method, material utilization is improved in the production link, the content of impurities and empty shells in the mummified aphid products is reduced, the mummified aphid rate is increased, damage to the mummified aphids is small, transportation and loose keeping of the mummified aphids are facilitated, and large-scale production and application commercialization of aphid parasites are facilitated.

Description

technical field [0001] The invention relates to the technical field of biological control, in particular to a method for separating and purifying the aphid Aphididae. Background technique [0002] Aphids, commonly known as greasy insects or honey insects, belong to the order Hemiptera and can harm wheat, corn, tobacco, cotton, cabbage, radish, soybean, rapeseed, cabbage, peach trees, apples, etc. They not only suck leaf juice, but also spread viral diseases , When the quantity is large, coal pollution is formed, causing a decline in quality. At present, there are more than 4,700 known species in the world, and about 1,100 species are distributed in China. [0003] Aphididae species are endoparasitic wasps of aphids and an important class of natural enemy insects, which have been used to control some important aphids. China is the country with the richest resources of Aphids, the main species are: Aphids, Aphids, A. Cocoon wasp, swallow aphid cocoon wasp, etc. [0004] At...

AI Technical Summary

Problems solved by technology

[0007] Aphids are the pupal stage of the wasp, which is a living body in the dormant stage. It is oval in shape, small in size, and the radius is mostly between 0.9-1mm. Most of them are attached to the back of the leaves and near the petioles of the carrier plants. When harvesting, it is easy to cause damage to the cocoon wall of the aphid and affect the emergence of the aphid

Although there are steps of separation and impurity removal in the prior art, the damaged part of the aphid is not treated, resulting in low purity of the product, which in turn affects the control effect, and the utilization rate of the aphid is low

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