论文部分内容阅读
苏芸金杆菌类产品对害虫的毒效,与产品内所含芽孢的多少不一定成正相关,即有些产品或制品芽孢多而毒力小,有些芽孢少反而毒力大。这一现象早为我国从事杀螟杆菌生产或应用的工作人员所认识,也是1966年国际微生物治虫及昆虫病理会议所依据而提出的不能用芽孢数量作为苏芸金杆菌毒力指标的意见,该会建议用生物测定法来确定毒力指标,用法国巴斯德研究院所制备的苏芸金杆菌制品E61为标准制剂,并指定每毫克的毒力为1000国际单位。用哪一种昆虫来作苏芸金杆菌的
The toxicity of Bacillus thuringiensis to pests is not necessarily related to the number of spores contained in the product. That is, some products or products have more spores and less virulence, while others are less virulent. This phenomenon has long been known to the workers engaged in the production or application of Chibi in China. It is also based on the 1966 International Conference on Microbiology and Insect Pathology that the quantity of spores can not be used as the indicator of the toxicity of Bacillus thuringiensis, Bioassay will be used to determine virulence indicators using the Bacillus thuringiensis strain E61 prepared by the Institut Pasteur of France as a standard formulation and a virulence of 1000 units per milligram is specified. What kind of insects to use for the Bacillus thuringiensis