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云斑天牛(Batocera horsfieldi)是蛀食多种林木树干的主要害虫。其幼虫在树干内蛀食木质部,行隐蔽生活,用一般防治方法难以防治。由于磷化铝遇水分易生成 Al(OH)_3,并释放出磷化氢剧毒气体,故可用来熏杀蛀干性害虫。防治方法是:先掏去虫孔内的虫粪,再将预先切好的磷化铝药片用镊子放入孔内,随即用泥土封口。磷化铝药片系由山东济宁化工实验厂生产,片重0.33g,有效成份56.5—58.6%。试验结果表明,用0.083g(即片重0.33g 的四分之一)、有效成份为56.5—58.6%的磷化铝防治树干内的云斑天牛幼虫,效果可达93%以上;防治1万株株虫口在5头左右的杨
Batocera horsfieldi is a major pest of many tree trunks. Its larvae in the trunk of the edible wood xylem, hidden life, with the general prevention and control methods difficult to control. As aluminum phosphide easily with water to generate Al (OH) _3, and release of phosphine poisoning gas, it can be used to smoky borers dry moths. Prevention and control methods are: first dig to insect hole in the worm hole, and then pre-cut aluminum phosphide tablets with tweezers into the hole, then sealed with soil. Phosphite tablets produced by the Shandong Jining Chemical Experiment Factory, weight 0.33g, the active ingredient 56.5-58.6%. The results showed that the control effect of P. aerugicosus larvae in the trunk was over 93% with 0.083g (one quarter of the tablet weight of 0.33g) and aluminum phosphide with the effective component of 56.5-58.6%. The control 1 Million strains of insect population in about 5 Yang