The different alcohol concentration, method and thickness of casing soil effect directly the biological efficiency of Pleurotus errngii.

不同酒精浓度处理、后熟期、覆土厚度、覆土模式直接影响杏鲍菇生物学效率的高低。

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Throughout the world it is practiced in many different ways and environments and with differing degrees of intensity and biological efficiency.

在世界各地，养殖方法和环境众多而不同，集约化程度和生物效率不一。

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The biological efficiency on cotton hulls is 40.0—55.5% and about 25% on rice straw or wheat straw. GV34 strain is a good one that is optimum for the north area of China.

产量高而稳定，棉籽皮的生物学效率为40.0～55.5％，稻草和麦秸为25％左右，是适合我国北方地区栽培的草菇优良菌株。

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