Sodium alginate coated biological agent for preventing clubroot and preparation method of sodium alginate coated biological agent

Abstract

The invention discloses a sodium alginate coated biological agent for preventing clubroot and a preparation method of the sodium alginate coated biological agent. The sodium alginate coated biological agent comprises the following raw materials in parts by weight: 34-47 parts of a chaetomium liquid, 18-26 parts of potatoes, 2-6 parts of brown sugar, 38-51 parts of palygorskite, a proper amount of distilled water, 19-26 parts of sodium alginate, 13-21 parts of calcium chloride, 4-12 parts of salicylic acid, and proper amount of absolute ethyl alcohol. The palygorskite is used to adsorb and fix a chaetomium spore, then the sodium alginate loaded with the salicylic acid is used to coat the chaetomium spore, the compressive strength of the particle microorganism agent is improved, the particle microorganism agent is not easy to break in the processes of transporting and applying the product so as to be beneficial for the use of the product, the effect of efficiently preventing the clubroot of the crop is realized, the prevention time is greatly prolonged, moreover, the germination of seeds and the growth of seedlings are effectively promoted, and the cold resistance of the seedlings is improved.

Description

technical field [0001] The invention relates to the technical field of biological pesticides, in particular to a sodium alginate-coated biological bacterial agent capable of preventing and treating clubroot and a preparation method thereof. Background technique [0002] In recent years, the harm of clubroot has increased year by year, and there have been large-scale epidemics in the major planting areas of Southwest, Central, Northeast and East China. Clubroot has become a major disease of cruciferous crops, affecting an area of ​​about 60 million mu, with an average yield loss of 20-30%, and severe field yield losses of more than 60%, or even crop failure. Each year, the economic loss of rapeseed is about 1 billion yuan, and the economic loss of vegetables is about 20 billion yuan, which greatly restricts the sustainable and stable development of the oilseed and vegetable industries and the increase of farmers' income. However, for the prevention and control of clubroot, t...

AI Technical Summary

Problems solved by technology

The control effect of Chaetomium globosa and its metabolites can be used as the line of defense of biological seed coating agents to resist the invasion of pathogenic bacteria early, and can solve the problems of reduced control efficiency of some existing biological seed coating agents in the field and lack of control persistence of some seed coating agents