Microbial Agent YF for Corn Stem Rot in Saline-Alkali Land

The patent uses readily available materials such as cow dung, wheat straw, and common microorganisms (Bacillus subtilis, Trichoderma harzianum) to create a low-cost microbial agent. These materials are inexpensive and can be locally sourced, making the treatment affordable for widespread agricultural use while achieving effective soil remediation.

The microbial agent enables the soil to self-regulate its salinity and improve its own quality through the metabolic activities of introduced microorganisms. The microorganisms naturally decompose organic matter, produce extracellular enzymes, and alter soil chemical properties without requiring continuous external intervention or expensive chemical inputs.

The patent replaces chemical seed coating agents with a biological coating system based on beneficial microorganisms. The microbial coating forms a protective layer on seeds that competes with and suppresses pathogenic fungi through biological mechanisms such as antibiosis, parasitism, and competition for resources, eliminating the need for synthetic chemicals and their associated environmental problems.

The patent converts the harmful presence of soil-borne pathogens into a beneficial situation by introducing microorganisms that specifically target and suppress these pathogens. The microbial agent transforms the disease-prone environment into a protected one, where the very soil that harbors pathogens becomes the medium for deploying biological control agents.