Method for breeding aphidius gifuensis within short cycle

Abstract

The invention discloses a method for breeding aphidius gifuensis within a short cycle. The method comprises the steps of: host plant cultivation, pest species breeding, and aphidius gifuensis large-scale breeding. A breeding cycle of the whole process is 29-40 days. Each dish of brassica chinensis can breed more than 12000 of aphidius gifuensis, a parasitism rate of the aphidius gifuensis is 95%, a formation rate of stiff aphids is 60%, and stiff aphids of the aphidius gifuensis in each dish can be used for controlling 10-15 mu of aphid-damaged farmland. Brassica chinensis of a vegetable variety is adopted as a host plant with high strong adaptability and fast growth; and the brassica chinensis a host plant variety with a shortest cultivation cycle in current breeding technology of sphidius gifuensis, thereby reducing a breeding cycle of the aphidius gifuensis, and improving breeding efficiency of the aphidius gifuensis. The method adopts a flotation breeding method for cultivating the host plant, is simple in process step and solves the problems such as high breeding energy consumption, a tedious technical process, poor activity of the aphidius gifuensis, and irregular formation of the stiff aphids of the aphidius gifuensis, and can increases a utilization rate of the aphidius gifuensis for wide application in agriculture and forestry industry, thereby enabling the aphidius gifuensis to have better feasibility of production, promotion, and application.

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 short-cycle breeding method for Aphids aphids. Background technique [0002] Aphids are one of the main pests in the production of agricultural and forestry crops. The harm of aphids is particularly serious in the production of tobacco leaves. Adults and nymphs mainly suck the juice of tobacco leaves on the back and tender stems of tobacco leaves, resulting in short growth of tobacco plants and unbalanced nutrition, which affects tobacco production. The normal growth and development of tobacco plants, the honeydew secreted by aphids can easily induce the occurrence of soot disease and other diseases, and at the same time, aphids also spread a variety of tobacco virus diseases, causing the prevalence of tobacco virus diseases; there are mainly chemical control and physical control for aphids, chemical control Relying on p...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems in the prior art that the species of host plants in the artificial breeding of Aphids persicae are not abundant, the host has a single diet, and it is difficult to cultivate, the breeding cycle of A. , high energy consumption, cumbersome breeding process, the host plant is easy to transmit disease and virus in the tobacco field, and the risk of aphids invading the tobacco field is a problem. A short-cycle breeding method for Aphids persicae is provided. The host plant used in this method is the vegetable variety Shanghai Qing, applied the floating seedling method to cultivate host plants, the specific breeding steps are as follows: