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在食用菌的制种和栽培过程中，经常受到害虫和杂菌的危害，据不完全统计，由于病虫的危害造成减产 20％～ 30％，严重时甚至绝收。用化学药剂防治病虫害，长时间使用单一药剂使病虫抗性增强，防治效果降低，且残留量大，会对人体健康构成威胁，也会造成严重的环境污染。生物防
In the process of seed production and cultivation of edible fungi, they are often endangered by pests and miscellaneous germs. According to incomplete statistics, the damage caused by pests and diseases causes a decrease of 20% to 30%. The use of chemical agents to control pests and diseases, prolonged use of a single agent to enhance pest and disease resistance, control and reduce the effect of residual large, will pose a threat to human health, will cause serious environmental pollution. Biological defense