The 4instar Spodoptera litura larvae growth weight is only 34.50% of the control afterit eats the leave treated with 10% YAE ld, after 4d the rate only 6.73%, that is, the weightgrowth-rate decreased 93.27% than the control.

• 斜纹夜蛾4龄幼虫取食涂抹10%25芫花乙醇粗提物的叶子1d后，体重增长率只有对照增长率的34.；50%25； 取食4d后，体重增长率仅为对照的6