苏特灵Bt生物杀虫剂防治松毛虫持效的研究

The long - lasting effects of using Suteling Bt biological insecticides to prevent and control Dendrolimus sp.

为了探明苏特灵Bt生物杀虫剂防治松毛虫的持效作用,在辽宁兴城市闻家林场进行了系统研究,结果表明,苏特灵不但对松毛虫幼虫杀虫效果好,可达90.3％～96.3％,而且在蛹期、成虫期均有作用,苏特灵防区比对照区的死蛹率提高25％,并影响成虫羽化率和产卵量,说明Bt生物杀虫剂防治松毛虫具有持效作用。

The systematic studies on long - lasting effects of application of Suteling Bt biological insecticides to prevent and control were conducted in Wenjia farm of Xingcheng city in Liaoning. The results showed that: the killing effects of Suteling were not only great for larvas of DendroLimus sp. , which reached 90.3 % ~ 96.3 % , but available during pupa and insect stages. the death rate of pupa in prevention was 25 % higher than that in control trails, and featherization rate of insect and yield of eggs were curbed, which proved that Bt biological insecticides was of long - lasting effects for prevention and control Dendrolimus sp. .