摘要
62 %螟虱宁可湿性粉剂 ,经毒力测定 ,共毒系数为 12 6 .5 3,具有增效作用。田间试验结果 ,江苏、江西两省用 90 0g/hm2 ,对二化螟的防效均在 90 %以上 ,对稻飞虱的防效 95 %以上 ;江苏可维持 2 0d左右 ,江西则在药后 1、3、7、14d的防效达 80 .6 5 %、92 .6 5 %、94.73 %、97.12 % ,效果明显。该剂延缓了害虫抗药性的发生与发展 ,对提高经济效益 。
By bioassay, 62% Mingshining WP had synergism and the co-toxicity coefficient (CTC) on rice stem borer was 126.53. The chemical efficiency on rice stem borer surpassed 90% in Jiangsu and Jiangxi province when the pesticide was used with 900g/ha. The chemical efficiency on rice planthopper was 95% for about 20 days in jiangsu province and was 80.65%, 92.65%, 94.73% and 97.12% on the first day, third day, seventh day and fourteenth day after the pesticides used. The pesticide can also defer pests resistance and was important in improving the economic efficiency and protecting the environment.
出处
《安徽农业科学》
CAS
2000年第6期767-768,770,共3页
Journal of Anhui Agricultural Sciences
