Method for breeding a large number of microplitis bicoloratus

Abstract

The invention relates to a method for breeding a large number of microplitis bicoloratus for controlling noctuidae injurious insects, belonging to the field of insect management. Beet armyworm or prodenia litura larvas between the end of second instar and the beginning of third instar are used as intermediate hosts, and microplitis bicoloratus is used as parasitic wasps for wasp inoculation, wherein the quantity ratio of the parasitic wasps to the hosts is 1:5-10. The hosts are bred under the conditions that temperature is 25-27 DEG C, RH (Relative Humidity) is 60-70%, photoperiod L:D is 2:12 and light intensity is 500 LUX. The parasitic wasps come out of polypide for cocooning, pupation and eclosion to obtain the microplitis bicoloratus. The invention realizes the efficient breeding of a large number of high-quality graparasitic wasps, namely microplitis bicoloratus which can be applied to the control of prodenia litura; the invention provides a solid basis for applying the microplitis bicoloratus to the control of the noctuidae injurious insects in large lands. The method is not limited by seasons, ensures the long-time abundant supply source of parasitic wasps and is beneficial to the long-time efficient control of noctuidae.

Description

technical field [0001] The invention belongs to the field of insect management, and relates to a single larval endoparasitic wasp in nature, in particular to a bispotted wasp that can be used to prevent and control Noctuidae pests in fields and vegetables. Background technique [0002] Noctuidae pests are widely distributed in subtropical and temperate regions of the world. In China, vegetables, fruits, rice, and garden plants in most areas are all harmed by Noctuidae, especially Spodoptera litura and Spodoptera litura, causing serious economic losses. Microbial insecticides and parasitoids are important biological factors in integrated pest management of these crops. Among them, Spodoptera litura polyhedrosis virus insecticides and beet armyworm polyhedrosis virus insecticides have been commercialized (Zongwen No. 1 and Chongwen No. 2), and are widely used in the control of these crop pests. [0003] Among IPM strategies, parasitic wasps have attracted much attention beca...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies in the prior art, to solve the problem of artificial mass reproduction of Braconus bispotae, to reproduce Braconus bispotae efficiently and with high quality, to carry out large-scale production, and to be applied to the prevention and treatment of noctuid moths family pests, to meet the needs of pest biological control