【摘要】 大袋蛾(Clania variegata Snellen)在陕西对泡桐危害极大,对其生物学进行特性了观察;测定出大袋蛾蛹和卵的发育起点温度分别为14.52℃、19.89℃,有效积温分别为173.27日度、110.55日度。用40％氧化乐果3000倍液和20％杀灭菊酯5000倍液防治2龄幼虫效果分别为96.08％和94.16％。更多还原

【Abstract】 Describes the biological features of Clania variegata on Paulcwnia fortunei Seem, in Shaanxi. The pupas and eggs start to develop at temperatures 14.52℃and 19.89℃ respectively. Their valid accumulated temperatures were 173.27 and 110.55 day/degrees. Control of the second instar lavars with 3000 times’ of 40% omethoate liquid and 5 000 times’ of 20% fenvalarate liquid result 96.08% and 94.16% effectiveness respectively.更多还原