苏云金杆菌防治黄脊竹蝗试验

Applying Bacillus thuringiensis Virus to Control Ceracris kiangsu Tsai

室内外试验与大面积防治结果证明：应用苏云金杆菌生物药剂防治黄脊竹蝗最适期，应掌握刚孵化后１－２龄跳蝻未上竹林之前，经观察，三明市约在５月上旬跳蝻出土，防治药剂的最佳浓度，经方差分析，筛选结果以粉剂０．３：０．７．水剂２：１００效果最好．

This paper dealed with the experiments that applied Bacillus thuringiensis Virus to control Ceracris kiangsu Tsai, A considerable control experiments conducted in laboratory and in the field indicated that Bacillus thuringiendsis a better pesticide. In order to gain a desirable control effect, the control would be carried out before the 1- 2-aged larvae went up the bamboos. Depending on substantial laboratory and field tests,by variance analysis, the optimum proportion of virus to powder in powdery preparation was determined as 3 to7, the optimum proPOrtion of virus to water in aqueous preparation was determined as 2 to 100.