【摘要】 研究了樟树和黄花蒿的乙醇、氯仿、石油醚浸提物对菜青虫的拒食和触杀作用。结果表明 ,黄花蒿乙醇浸提物和樟树石油醚浸提物的活性较好 ,4 8h拒食率分别为 72 .11%、5 7.86 % ,触杀作用的LC50 分别为 1.2 32、1.2 75g·L-1(DW)。更多还原

【Abstract】 The contact poisoning and antifeedants effect of extract of Cinnamomum camphora and Artemisia annua against cabbage worn were studied. The result showed that the activity of extract of C. camphora-alcohol and A. annua-petroleum ether are better. Forty eight hours after experiment, the rates of antifeedants are 72.11 % and 57.86 %,and medium lethal concentrations of contact poisoning are 1.232 and 1.275 g·L -1 respectively.更多还原