对于苏芸金杆菌制剂来说,用检查活孢子数的方法不能充分反映产品的质量。因为不同变种对不同害虫的毒力会有很大差异,甚至相同菌种在不同生产条件下的产品,尽管孢子数相近,毒力却有显著差异。通过生物测定可以直接了解产品毒力。但生物测定的方法及采 For Bacillus thuringiensis preparations, the method of checking the number of viable spores does not adequately reflect the quality of the product. Because different varieties of virulence of different pests will be very different, and even the same species in different production conditions of products, despite similar spores, there are significant differences in virulence. Bioassay can directly understand the product toxicity. However, bioassay methods and mining