The cocoon of earthworm was chosen for the hatching experiment and results showed that its multiplication was negatively affected by the addition of biogas liquid.
表明在蚯蚓的生长阶段，沼液的添加对于成蚓和幼蚓的生长都有明显的促进作用；
The hatching rates of treatments were all over 95%, and this showed that the treatment intensity in the experiment was safe for the silkworm eggs.
热冲击则无明显效果．同时调查各组孵化率表明，其孵化率均在95％以上，说明各处理强度对蚕卵均属安全范围。
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