利用生命表评价不同防治措施对光肩星天牛的效果

为更好地评价不同处理措施对光肩星天牛的防控效果，在嘉峪关市采用4种防治措施对光肩星天牛进行防控:A.每年释放天敌1次；B.每年林内释放天敌1次，林缘喷药2次；C.对农田林网每年喷药2次；D.对行道树每年喷药2次。对每个处理和未进行任何处理对照区进行连续3年的生命表数据调查，编制出不同处理条件下的生命表并进行了比较分析。结果表明，2018年嘉峪关地区光肩星天牛完成1个世代后，处理A、B、C、D和对照区的种群趋势指数分别为1.075 4、3.766 4、5.332 9、4.898 8和7.872 4。从生命表分析比较可看出，4种防治处理的种群趋势指数均远低于对照，其防控效果由高到低的排列顺序为A＞B＞D＞C。每年释放1次天敌的处理防治效果最显著，其种群趋势指数比对照降低86.34%，可推荐作为防治光肩星天牛的首选措施在生产中推广应用。

Evaluation of Control Effects on Different Measures against Anoplophora glabripennis by Life Table Method

In order to evaluate the control effects of different measures against Asian longhorned beetle (Anoplophora glabripennis),four control measures were adopted in Jiayuguan city:A.releasing natural enemies once a year; B.releasing natural enemies once and spraying pesticide twice in forest edge per year; C.spraying pesticide twice in agricultural shelter forests per year; D.spraying pesticide twice on urban street trees per year.A control (without any treatment) was set.Life tables of different treatments were constructed and compared by investigating the data for each treatment in three consecutive years.The results showed that the values of population trend index for treatment A,B,C,D and control were 1.075 4,3.766 4,5.332 9,4.898 8 and 7.872 4,respectively,in 2018,the corresponding control effects were A>B>D>C.Measure A showed the most promising control effects,by which the population trend index decreased by 86.34% compared to the control.Therefore,releasing natural enemies once a year was recommended to control Asian longhorned beetle in practice.