诱集带诱杀对苹果二斑叶螨发生为害的控制效果

利用二斑叶螨的越冬习性,用诱集带诱杀法防除,翌年调查消长规律,盛发期测定处理区螨害与无螨对照叶片生理参数变化.结果表明,平均每张诱集带诱获越冬螨1 274头;发生高峰期比对照和常规防治区晚20 d和5～7 d,6～8月螨量明显下降,螨害落叶率减少16.4.常规和诱杀防治的叶片中叶绿素含量比对照分别下降33和54,光合强度分别下降46.1和50.5,蒸腾强度分别下降12.4和14.4,气孔传导率分别下降26和31,但二者差异不显著.

The Effect of Applying Lure Collecting Tape to Control Apple Tetranbychus urticae

According to the characteristics of Tetranbychus urticae in the winter,a physical method was used to collect and kill the insect. The population growth and decline were investigated and control experiments have been done the leaf physiological parameters. The results indicated that 1 274 T. urticae were found on each lure collecting tape averagely. The peak was postponed 20 days and 5~7 days respectively compared with the control and traditional methods. From June to August the insect number decreased obiviously and the amoun of fallen leaves decreased by 16.4%. The chlorophyll content in the leaves treated by traditional method and the lure collecting tape one fell by 33% and 54%, the photosynthetic rate by (46.0%) and 50.5%, the transpiration rate by 12.4% and 14.4%,the stomatal conductivity by 26% and 31% respectively. However, the difference was not significant. Therefore, it is thought that the lure collecting tape method could be used to control the insects.