Composite microbiological bacterial agent used for returning maize straws to field and preparation method and applications thereof

Abstract

The invention discloses a composite microbiological bacterial agent used for returning maize straws to a field and a preparation method and applications thereof. The composite microbiological bacterial agent comprises Arthrobactersp, Bacillus subtilis, Phanerochaetechrysosporium, Trichoderma koningii, Aspergillusniger, Saccharomyces cerevisiae, Streptomyces alboniger, and Streptomyces hygroscopicus. The preparation method comprises the following steps: carrying out slant culture, fermenting one-grade seeds and second-grade seeds and mixing, culturing, and fermenting the one-grade seeds and the second-grade seeds, realizing the optimization of compound bacterial biomass and the matching of different strains, and the compound bacterium effective viable count can reach 1010cfu per gram. By utilizing the compound microbiological bacterial agent, the decomposition velocity of organic matters can be accelerated, the straw can be decomposed and blackened within 10 days at the low temperatureof 10-15 DEG C; the straw is basically well-rotted; and the composite microbiological bacterial agent has certain disease-resisting effect, and provides necessary condition for preventing the diseases of wheat roots.

Description

technical field [0001] The invention relates to a composite microbial bacterial agent, in particular to a composite microbial bacterial agent which uses microorganisms to treat corn stalks to accelerate the rapid return of the straw to the field. The present invention also relates to the preparation method and application of the composite microbial bacterial agent. Background technique [0002] Crop straw is one of the most abundant substances in the world. At present, the solution to the problem of large areas of straw in my country mainly relies on direct return to the field. Especially in the north, under the double cropping system of corn and wheat, returning a large amount of corn stalks to the field year after year has shown many benefits to the soil ecosystem of wheat fields. It is not only conducive to the accumulation of soil organic matter, but also reduces soil bulk density, increases soil porosity, improves soil permeability, and improves poorly infiltrated barr...

AI Technical Summary

Problems solved by technology

However, so far, there has been no report on the application of compound microbial agents with disease-resistant effects to accelerate the return of corn stalks to the field under low temperature conditions.