Beauveria bassiana preparation used for preventing and controlling pine moth, its preparation method and use

Abstract

An agricultural chemical for preventing and killing pine moth is prepared from Beauveria bassiana (CGMCC No.1573) through slant culture, culturing in jar, culturing in bag, and mixing with nutritive wet material. It has high effect (70-80%) and no pollution.

Description

technical field [0001] The invention relates to a microbial preparation, in particular to a Beauveria bassiana preparation for controlling pine caterpillars, in particular to a Beauveria bassiana preparation suitable for preventing and controlling pine caterpillars in northern arid areas, and its preparation method and application. Background technique [0002] Pine forest is the main type of forest in our country, and it is the main content of natural forest protection projects. It plays an important role in the ecological security of our country, especially in the ecologically fragile areas in the north, where pine forest plays a huge role as a barrier. However, pine caterpillars have always been the main pests of pine forests. There are 27 species (including 4 subspecies) of pine caterpillars in China, among which the masson pine caterpillar is the most widely distributed and the most harmful in the south. In the north, Chinese pine caterpillars, red pine caterpillars, H...

AI Technical Summary

Problems solved by technology

However, because the growth and reproduction of Beauveria bassiana requires high humidity and appropriate temperature, its application is still limited to 12 provinces and regions in the south, mainly to control the masson pine caterpillar.

There are two main reasons for restricting the application of Beauveria bassiana in the north. First, there is a lack of local excellent strains adapted to the arid and low temperature environment of northern forests.

The Beauveria bassiana strains used in the south are isolated from the infected pine pine caterpillars. They generally have the genetic characteristics of adapting to the hot and humid climate in the south and adapting to parasitism on the original host pine pine caterpillars. They cannot adapt well to the north.

Second, there is a lack of suitable formulations and application techniques suitable for use in boreal forest environments

However, in the north, due to the dry and low temperature in the forest, after applying the above-mentioned formulations and methods, the spores of Beauveria bassiana will soon dry out or freeze to death due to dehydration, or the spores cannot germinate or their vitality will decrease due to lack of water absorption. Failure to successfully infect, making control failure