作　　者： ; ; ; ; ; ; ; ;

机构地区： 湖南人文科技学院生命科学系

出　　处： 《湖南农业科学》 2009年第12期72-74,共3页

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： 苯苄乙草胺 抛秧田 杂草 防除效果 安全性

领　　域： [农业科学] [农业科学]