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多年来,我国生产的苏云金杆菌(以下简称B·t)制剂的质量很不稳定,这给工业生产和大田防治带来了许多困难。要使这个问题得到解决,必须实行产品质量的标准化,而生物测定是使产品质量标准化的基本方法。下面就生物测定的三个组成部分,即生测昆虫、制剂的标准品和生测程序谈谈个人的看法。 1、生测昆虫 根据现有文献记载,B·t各变种对150余种昆虫都有不同程度的致病力和毒杀作用。但在我国可用于防治蔬菜、粮作、经
Over the years, the quality of Bacillus thuringiensis (hereinafter referred to as B · t) preparations in China has been very unstable, which has brought many difficulties in industrial production and field control. To solve this problem, we must standardize product quality, and bioassay is the basic method to standardize product quality. Below to talk about the three components of the bioassay, ie, the test insects, the standards for the preparations, and the bioassay procedures. 1, bio-test insects According to the existing literature, B · t varieties have more than 150 kinds of insects have different degrees of virulence and toxicity. But in our country can be used to control vegetables, grain, by