A compound microbial agent with corn and soybean stalk degradation ability under low temperature conditions and a preparation method and application thereof
The compound inoculant of Trichoderma FS5 and Pseudomonas aeruginosa BNT4 was used to achieve efficient degradation of corn and soybean straw under low temperature conditions, solving the problem of straw resource utilization in Northeast China and improving soil fertility and microbial community richness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
- Filing Date
- 2026-03-20
- Publication Date
- 2026-07-17
AI Technical Summary
Existing microbial agents are difficult to effectively degrade corn and soybean straw under low temperature conditions, especially corn and soybean straw in Northeast China, which limits the utilization of straw resources. Moreover, existing research focuses on the degradation of single crop straw and lacks microbial agents that can degrade corn and soybean straw with a broad spectrum.
A compound microbial agent composed of Trichoderma FS5 and Pseudomonas aeruginosa BNT4 is used. The mixture is cultured and mixed in a fermentation medium to form a synergistic system of "fungal attack + bacterial metabolism". This system can break through the structural barrier of corn straw and rapidly decompose soybean straw protein, achieving efficient degradation at low temperature.
At a low temperature of 4℃, the compound microbial agent achieved a degradation rate of 33.12% for corn straw and 8.78% for soybean straw. It also improved soil organic matter by adjusting the carbon-nitrogen ratio and promoted the richness of soil microbial communities, thus solving the problem of straw degradation under low temperature conditions.
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