Biological preventing and treating method for paecilomyces varioti in hepialus breeding

Abstract

The invention belongs to the technical field of biological prevention and treatment and in particular relates to a biological preventing and treating method for paecilomyces varioti in hepialus breeding. In order to solve the problems that an existing chemical method of preventing and treating paecilomyces varioti during hepialus breeding can generate pesticide harm to larva of hepialus, reduce the vitality of hepialus and also inhibit growth of other beneficial fungi, the invention provides the biological preventing and treating method for paecilomyces varioti in hepialus breeding. The method comprises the following steps: activation and spreading cultivation of tichodrma hypha, soil stirring and subpackaging, breeding of larva of hepialus and etc. After activation and spreading cultivation of tichodrma hypha, the tichodrma hypha is blended into soil mixed with sawdust, and the larva of hepialus is bred with the soil. The method provided by the invention can reduce damage of paecilomyces varioti in hepialus breeding, hepialus grows and gains weight faster and the death rate is greatly reduced; moreover, the method is simple to use, non-toxic and harmless and more environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of biological control, and in particular relates to a biological control method for Paecilomyces in raising bat moths. Background technique [0002] Trichoderma fungi mostly live in soil, rotting wood and dead grass, mainly including Trichoderma harzianum, Trichoderma reesei, Trichoderma viride, Trichoderma brevicompactum, Trichoderma asperellum , Trichoderma koningii, Trichoderma arundinaceum and Trichodermataxi, etc. They have multiple mechanisms of antagonistic action: [0003] 1. One is the competition mechanism: Trichoderma has wide adaptability, fast growth, and can quickly use nutrients and occupy space; [0004] 2. One is hyperparasitism: Trichoderma can parasitize many fungi. The Trichoderma mycelium is entwined and attached to the pathogen, producing haustoria to absorb the nutrients of the pathogen, and causing the pathogenic mycelium to dissolve or break; [0005] 3. There are also some Trich...

AI Technical Summary

Problems solved by technology

[0004] 2. One is hyperparasitic phenomenon: Trichoderma can parasitize many fungi

However, while chemical control methods kill Paecilomyces, they will also cause phytotoxicity