Preparation method for bacillus methylotrophicus wettable powder

Abstract

The invention relates to the field of biopesticides and microbial fertilizers and particularly discloses bacillus methylotrophicus wettable powder containing a spore germination agent and a preparation method thereof. The wettable powder is prepared from the following raw materials in parts by weight: 40-70 parts of bacillus methylotrophicus, 20-30 parts of talcum powder serving as a padding, 1-4 parts of sodium dodecyl benzene sulfonate serving as a wetting agent, 0.2-1 part of tea saponin serving as a dispersing agent, 0.1-0.5 part of methionine and 0.1-0.5 part of 2,6-dipicolinic acid calcium salt serving as a spore germinator, 0.5-2 parts of ascorbic acid and 0.2-1 part of beta-dextrin serving as an ultraviolet protector, and 1-4 parts of maltose and 0.2-1 part of mannitol serving as a dryness protector. After the bacillus methylotrophicus wettable powder prepared by the preparation method is applied to a land for growing field crops, the spore germination speed is rapid, and the germination rate is high; and the bacillus methylotrophicus wettable powder is capable obviously improving the fertilizer efficiency and plant disease control effect, reducing the spore dosage and lowering the cost.

Description

technical field [0001] The invention relates to the fields of biological pesticides and microbial fertilizers, in particular to a methylotrophic Bacillus wettable powder containing a spore germination agent and a preparation method thereof. Background technique [0002] my country uses a large amount of chemical pesticide preparations and fertilizers every year, which can easily cause excessive pesticide residues and bio-enrichment, which not only pollutes the ecological environment, but also affects human health. However, biopesticide has few side effects and is harmless to humans. It is a kind of green pesticide with broad prospects and has increasingly become a trend in the development of global pesticides. [0003] Bacillus is currently the most researched microorganism in biological pesticides and microbial fertilizers. It has broad-spectrum antibacterial activity and strong resistance to stress. Its vegetative cells can reproduce and colonize on the surface of fungal p...

AI Technical Summary

Problems solved by technology

[0016] At the present stage, there is no public report on the spore germination agent of methylotrophic bacillus, and there is no report on the research of adding a spore germination agent to the wettable powder of methylotrophic bacillus

[0017] In addition, due to the compatibility of different bacillus with wetting agents, dispersants and other additives, the carrier has different adsorption properties to various bacillus, and the existing formula or preparation process of bacillus wettable powder cannot be used Prepare methylotrophic bacillus wettable powder containing spore germination agent; the adsorption amount of effective bacteria in wettable powder, survival rate, control effect on harmful bacteria and stability of wettable powder dose are quite different, the whole can be The preparation method of wet powder must fully consider the adsorption capacity of each carrier, the protective effect on the drying process of methylotrophic bacillus, the influence of wetting agent and dispersant on the suspension rate of wettable powder, the wetting time, and the influence on the spore germination agent. Comprehensive screening can obtain the wettable powder of methylotrophic bacillus with short wetting time, high suspension rate, long storage time of spores, rapid germination of spores after use, and good control effect.