生物制剂Am防治烟草花叶病的研究

Study on the Effect of Biological Preparation Am on the Mosaic of Tobacco

用生物制剂Ａｍ及其复配制剂防治烟草花叶病，结果：①各处理较对照烟株发病率低，病情指数低，损失减少；②Ａｍ菌球液５００倍效果最好，在病圃和温室接种对比试验中防效分别为３３．０６％和４９．７２％。

The experiment in curing the mosaic of tobacco with the biological preparation Am and its mixture showed:①there were much lower frequency of tobacco plants demaged by the TMS,lower index of virus disease and less lost of tobacco yield in the treatment materials than in check materials,②the solution of 500 time Am thallus was best one of curing the mosaic of tobacco,which efficiency was 33.06% in virus disease experiment and 49.72% in incubation experiment in greenhouse.