Diaeretiella rapae large scale breeding method

Abstract

The invention discloses a Diaeretiella rapae large scale breeding method using a heterotherm constant humidity mode to breed Lipaphis erysimi Kaltenbach; the method has the following advantages: 1, the method can improve breeding Lipaphis erysimi Kaltenbach imaginal survival rate, and shortens the period in which the Lipaphis erysimi Kaltenbach grows from eggs to imago; 2, the method can prolong the life of breeding Lipaphis erysimi Kaltenbach female imago; 3, the method can breed the heterotherm constant humidity breeding Lipaphis erysimi Kaltenbach female imago into next generation Lipaphis erysimi Kaltenbach, and can greatly improve Lipaphis erysimi Kaltenbach female imago farrowing rate; 4, the method can improve the Diaeretiella rapae parasitic rate on the Lipaphis erysimi Kaltenbach. The mummified alates preservation condition can enable the Diaeretiella rapae to keep a high eclosion rate; the method can shorten the breeding time of the Diaeretiella rapae host, thus improving Diaeretiella rapae breeding efficiency.

Description

technical field [0001] The invention belongs to the technical field of biological control of agricultural and forestry pests, and in particular relates to a breeding method for the host of Aphids rapae, the host of Aphids rapae, and a method for large-scale breeding of Aphis rapae. Background technique [0002] Yunnan is rich in crops, with many types of cooked crops, aphids are widely distributed, highly prevalent, common hazards, large amount of pesticides, single control method, poor control effect, pesticide residues and pollution, etc., have long been a difficult problem for plant protection work in Yunnan Province . In order to achieve new breakthroughs in plant protection work, since 2006, according to the requirements of the Ministry of Agriculture to "vigorously promote the green prevention and control of crop diseases and insect pests, and promote the quality and safety of agricultural products and the safety of the agricultural ecological environment", Yunnan Prov...

AI Technical Summary

Problems solved by technology

Our research group has been studying how to efficiently reproduce radish aphids and how to cultivate hosts suitable for large-scale reproduction of Aphids rapae. We discovered a method to improve the reproductive efficiency of radish aphids (publication number: CN105230575A) through gradual Breeding radish aphids at variable temperatures, the bred radish aphids have many advantages: large individuals, increased survival rate of adults, shortened breeding cycle, and increased egg production of female adults of radish aphids, but this method also has some disadvantages, (1) breeding The process requires high temperature accuracy and high energy consumption. (2) Due to the small size of aphids, it takes a lot of manpower to identify nymphs of different ages. It is time-consuming and laborious to select the 3rd instar nymphs of the radish aphid as the host of Braconus rapae. Facilitate large-scale reproduction of Aphididae

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