Method for preventing and controlling pine sawflies as pine tree pests by using drino inconspicua meigen

Abstract

The invention provides a method for preventing and controlling pine sawflies as pine tree pests by using drino inconspicua meigen. A double-layered silk net box with different mesh apertures is adopted, in the silk net box, meshes of a silk net on the bottom layer are large, meshes of a silk net on the upper layer are small, the silk net on the upper layer has 12 meshes, the silk net on the lowerlayer has 10 meshes, several small holes are formed in a position which is distant from a bottom plate by 0.2 cm, the humidity of lining paper is maintained, thus, parasitic natural enemies on the bottom layer of a box body can fly out smoothly, but adult pine sawflies cannot fly out; by the bottom plate, tachina fly mature larvas can enter the bottom layer of the box body to pupate, but pine sawfly cocoons cannot drop to the bottom layer of the box body, and thus, natural enemy insects are separated from host insects; and after the cocooning peak hour of the pine sawflies from October to November every year, cocoons of the pine sawflies are collected in field, are closed in a box, and are flatly placed in a field pine forest, the drino inconspicua meigen can fly out after emergency from November to February, and when the pine sawflies begin to emergence in the middle ten days and the last ten days of March, the cocoons of the pest sawflies in the box are burnt up to prevent emergence,mating and spawning of the pine sawflies. By the biological prevention and control method, an ecological environment is protected, furthermore, the prevention and control cost is reduced, and thus, agood prevention and control effect is achieved.

Description

technical field [0001] The invention belongs to the field of biological control of forestry pests, and in particular relates to a method for preventing and controlling the pine leaf wasp by using a separation and releasing box for the parasitic chela parasite to control the pine leaf wasp which is a parasitic natural enemy. method. Background technique [0002] The pine sawfly is one of the main pests of pine trees. It mainly harms masson pine, slash pine, Huashan pine, Yunnan pine, etc. It mainly feeds on pine needles with larvae. Repeated damage can cause pine trees to die in pieces. Pine sawflies are insects with complete metamorphosis, and their pupae are surrounded by cocoons. Most species of pine sawflies have multiple generations in a year, and some species have overlapping periods, which brings great difficulties to control. At present, the prevention and control of the pine sawfly is mainly based on cocoon harvesting treatment, chemical control and microbial cont...

AI Technical Summary

Problems solved by technology

According to the biological learning of the two kinds of pine sawflies and their natural enemies, the parasitic fly, the applicant has a utility model patent 201720371504.3 for the separation device of the natural enemy of the pine saw wasp, but this patent is only for the pine saw was