摘要
室内毒力测定及田间药效试验结果表明,25%噻虫嗪水分散粒剂对B型烟粉虱成虫的生物活性高,为毒死蜱的269.09倍.田间喷雾对黄瓜上烟粉虱成虫有优良的防效,药后第3天的防效为95.39%,持效期10 d以上.用该制剂防治烟粉虱田间喷雾以5000～6 000倍稀释液为宜.
Both foliar spray in laboratory and field trails were conducted to evaluate the effect of thiamethoxam 25 % WG against adults of Bemisia tabaci B-biotype on cucumber seedlings. The laboratory bioassay indicated that the activity of thiamethoxam was 290-fold as much as chlopyrifos, and the results in field trials showed that the controlling effects reached 95.39 % in 3 days. The suitable dosage concentration was 1∶5 000-6 000 dilution for foliar spray.
出处
《中国蔬菜》
北大核心
2005年第3期14-15,共2页
China Vegetables
基金
中央级科研院所社会公益研究专项 ( 2003DIA6N003 )
农业部"948"重大项目(2003-Z69)资助
