新药剂氰氟虫腙对稻纵卷叶螟的防治效果

目的]探索新药剂氰氟虫腙对稻纵卷叶螟的防治效果以及氰氟虫腙科学的使用剂量。方法]以水稻申6为供试作物，20％氰氟虫腙乳油、24％氰氟虫腙悬浮剂和5％锐劲特悬浮剂为供试药剂，在水稻分蘖期施药，研究氰氟虫腙对稻纵卷叶螟的防治效果。结果]20％氰氟虫腙乳油对低龄稻纵卷叶螟幼虫有良好的杀虫效果，对水稻有良好的保苗效果。药后7～10d．氰氟虫腙乳油120～150g／hm^2的杀虫效果为88．46％～92．35％，保苗效果为83．25％-93．74％，与5％锐劲特悬浮剂37．5g／hm^2的效果相当。氰氟虫腙对天敌基本没有影响，而且对水稻也很安全，是防治稻纵卷叶螟的理想新药剂。结论]该研究为稻纵卷叶螟的综合防治提供了依据。

Study on Control Effect of New Pesticide Metaflumizone on Cnaphlocrocis medinalis

Objective] The aim was to explore the control effect of new pesticide metaflumizone on Cnaphlocrocis medinalis and scientific using dosage of metaflumizone.Method] With rice Shen 6 as tested crop,20% metaflumizone EC,24% metaflumizone SC and 5% regent SC as tested pesticide,the pesticide were applied at rice tillering stage and the control effect of metaflumizone on C.medinalis was studied.Result] 20% metaflumizone EC had better insecticidal effect on low instar C.medinalis larvae and had better seedling protection on rice.After 7-10 d application,the control effect of metaflumizone EC 120-150 g/hm2 was 88.46%-92.35% and seedling protection effect was 83.25%-93.74%,and the effect was equivalent with that of 5% regent SC 37.5 g/hm2.Metaflumizone almost has no effect on natural enemies and was safe to rice,which was ideal pesticide for controlling C.medinalis.Conclusion] The research provided the basis for integrated control of C.medinalis.