田间试验表明 ,0 8%苦参碱·内酯水剂是一种对蚜虫杀虫活性高、持效期长、使用安全的杀虫剂。防治梨二叉蚜 ,使用 80 0倍液药后 7,14d防效均可达 94 %以上 ;防治桃瘤头蚜 ,使用 80 0～ 10 0 0倍液 ,药后 7,14d防效均在 95 %以上 ,与 10 %吡虫啉 30 0 0倍液防效无显著差异 Field trials showed that 0 8% matrine lactone agent is insecticide with high insecticidal activity against aphids, long lasting period and safe use. Prevention and treatment of pear Aphis gossypii, using 80 0 times after the drug 7,14 d anti-efficacy up to 94% or more; control peach head aphid, the use of 80 0 ~ 100 0 times the drug 7,14 d after the anti-efficacy More than 95%, with 10% imidacloprid 30 0 0 times no significant difference in control effect