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第一，要确保菌种质量不退化、不携带杂菌，选择抗杂菌强，适合不良环境能力强的菌种。 第二，正确配比处理好培养成料，创造一个发菌良好的内部因素，强化发菌速度，确保发菌质量。 第三，采用立体覆土出菇法，应严防烧菌，发现有杂菌污染的菌袋，应隔离开，防止杂菌侵染土
First, to ensure that the quality of the strain does not degrade, do not carry bacteria, choose strong antibacterial bacteria, suitable for poor environmental ability of bacteria. Second, the correct ratio to deal with training materials, to create a good internal factors hair bacteria, and strengthen the germination speed, to ensure the quality of germs. Third, the use of three-dimensional soil cover mushroom method, should be strictly prevent the bacteria, bacteria found bacteria bags, should be isolated to prevent bacteria infestation of soil