20种杀虫剂对稻纵卷叶螟高龄幼虫的效果

The Effect of 20 Kinds of Insecticides Against older Instar Larva of Cnaphalocrocis Medinalis

20种杀虫剂对稻纵卷叶螟高龄幼虫的试验表明:24h内防治效果最好的杀虫剂品种是阿维菌 素,其次是锐劲特及赛丹。拟除虫菊酯类杀虫剂功夫、灭扫利及高效氯氰菊酯,以及沙蚕毒系的杀虫 双仍能有效控制稻纵卷叶螟的为害。有机磷类杀虫剂三唑磷、乙酰甲胺磷、辛硫磷、乐斯本、甲胺磷、 甲基1605及敌敌畏以及三种含有机磷的混剂对稻纵卷叶螟高龄幼虫几乎无效。同一杀虫剂对不同 地区的稻纵卷叶螟幼虫的防治效果有差异。

20 kinds of insecticides against 4-5 instar larva of Cnaphalocrocis medinalis were tested. The result showed that the best effect was abamectin, next was fipronil and endosulfan in 24h. The pyrethroid insecticides that included cyhalothrin, fenpropathrin, beta-cypermethrin and the bisultap could still control the Cnaphalocrocis medinalis. The effect of the organical phosphate insecticides that included triazophos, acephate, phoxim, chlorpyrifos, methamidophos, parathion-methyl, dichlorvos and mixture of chlorpyrifos＋ abamectin, phoxim ＋triflumuron and phoxim ＋cypermethrin against older instar larva of Cnaphalocrocis medinalis were nothing. The reselt of the same insecticide against different popution instar larva of Cnaphalocrocis medinalis were difference.