40%苯苄乙草胺WP防除水稻抛秧田杂草效果研究  

Control Effects of 40 % Mefenacet + Bensulfuron-methyl+ Acetochlor Wet Powder on Weeds in Seedling Throwing Paddyfield

作　　者：金晨钟[1] 王义成[1] 李四军[1] 刘桂英[1] 陈跃进[1] 王朝辉[1] 屈双婷[1] 陈代旺[1] 

机构地区：[1]湖南人文科技学院生命科学系,湖南娄底417000

出　　处：《湖南农业科学》2009年第12期72-74,共3页Hunan Agricultural Sciences

基　　金：湖南省高校科技创新平台建设项目资助(湘财教指[2009]70号);娄底市科技计划项目(娄财企指2008第562号);湖南省大学生研究性学习和创新性实验项目

摘　　要：对40%苯苄乙草胺WP、10%苄嘧磺隆WP、50%苯噻酰草胺WP、20%乙草胺WP、60%苯噻苄WP防除水稻抛秧田杂草的效果进行研究。试验结果表明：40%苯苄乙草胺WP在水稻抛秧后5-7d施药,可有效防除稗草、节节菜、矮慈菇、鸭舌草、异型莎草等各种稻田常见杂草,用药量600-750g/hm2,药后40d对各类杂草总草株防效、鲜重防效分别达83.8%-88.6%、94.4%-96.4%,显著高于对照药剂60%苯噻苄WP600g/hm2、10%苄嘧磺隆WP300g/hm2和50%苯噻酰草胺WP750g/hm2防效。The control effects of 40% Mefenacet ＋Bensulfuron-methyl ＋Acetochlor wettable powder （WP）, 10% Bensulfuron-methyl WP, 50% Mefenacet WP, 20% Acetochlor and 60% Mefenacet ＋Bensulfuron-methyl WP on weeds in seedling throwing paddyfield were studied in this paper. The experimental results showed that when 40% Mefenacet＋ Bensulfuron-methyl＋Acetochlor WP applied at 5 to 7 days after rice seedling throwing, it could effectively control the common weeds in paddyfield, such as Barnyard-grass, Rotala, Sagittaria pygmaea, Monochoia vaginalis, Cyperus difformis and so on, with the dosage of 600-750 g/hm2. 40 days after treatment, the control effects of total plant and fresh weight for each kinds of grass was 83.8%-88.6% and 94.4%-96.4%, respectively, which were significant higher than the effects of control （60% Mefenacet ＋Bensulfuron-methyl WP of 600 g/hm2, 10% Bensulfuron-methyl WP of 300 g/hm2 and 50% Mefenacet WP of 750 g/hm^2）.

关 键 词：40%苯苄乙草胺WP 抛秧田 杂草 防除效果 安全性 

分 类 号：S482.4[农业科学—农药学]