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作 者 ：陈学英 周章义 李景辉

期 刊 ：林业科学 1996年 32卷 2期 页码：144-149

关键词：截形叶螨；越冬；生物制剂；杀螨剂；

Keywords:Telranychus truncatus, Hibernation, Biological insecticide, Acaricide,

摘 要 ：北京地区国槐普遍受截形叶螨(Tetranychus truncatus Ehara)危害,从5月下旬至11月上旬均有发生,危害盛期在7—8月份,有螨叶率市区达70%,近郊区可达90%以上。根据有效积温及气象资料推算,截形叶螨在北京地区每年发生15—17代。在28℃、RH67℃条件下,室内饲养,发育一代平均6.7天,在27℃、Rh72%条件下,雄成螨平均寿命7.5天,雌成螨10.7天。截形叶螨以成螨越冬,其场所主要在树干及粗枝树皮裂缝内,极少部分在小校、树冠下草地及根际土壤中。早春用生物制剂—2.5%日光霉素1000倍,10%增效浏阳霉素2000倍73%克螨特乳油2000倍及洗衣粉400倍,碳酸氢铵颗粒剂100倍防治,均能取得很好的效果。

Abstract:Tetranychus truncatus is a mite pest of Sophora japonical in the district of Beijing.It occurs from last May to early November,with a peak harmful time from July to August.In the urban district,about 70% of the leaf was injured, and in the suburb,it was over 90%.there are 15-17 generations a year. Each generation lasts 6.7 days on an average at 28℃, RH 67%.Theaverage life-span is 7.5 days for the males and 10.7 days for the females at 27℃,RH 72%.It overwinters as adult in the creack of trunk and limb quite few are in the branchlet,grass and soil layer of the root. Using 25% Nivkomycin at a dilution of 1:1000,10% Zeng xiao lui yang mei su of 1:2000,73% propargite of 1:2000,washing powder of 1:400,pellet NH₄HCO₃ of 1:100 in spring,significant effectivenes was obtained.

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