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由华南农业大学昆虫毒理研究室研制并已获得我国农药登记的０．３％印楝素乳油是一种高效、低毒的植物性杀虫剂，对小菜蛾、稻飞虱等害虫具有显著的拒食和生长发育抑制作用。目前，国内关于印楝素制剂的分析方法未见报道。１ 实验部分１．１ 仪器与试剂 仪器ＨＰ－１１００高效
The 0.3% Azadirachtin EC developed by the Insect Toxicology Research Laboratory of South China Agricultural University and having obtained the registration of pesticides in China is a highly effective and low toxicity botanical insecticide which has significant effects on the diamondback moth, rice planthopper and other pests Antifeedant and growth inhibition. At present, there is no report on the analytical methods of azadirachtin in China. 1 Experimental 1.1 Instruments and Reagents Instruments HP-1100 efficient