50%乙·异噁松EC防除油菜田杂草药效试验  

Experiment in Control Effect of 50% Metazachlor·Clomazone EC on Weeds in Rape Field

作　　者：谢标洪 袁友明[2] 王明锐[2] 朱文达[3] 李林[3] 

机构地区：[1]江西赣州农业学校,江西赣州341000 [2]湖北省农业科学院测试中心,湖北武汉430064 [3]湖北省农业科学院植保土肥研究所,湖北武汉430064

出　　处：《江西农业学报》2010年第12期84-86,90,共4页Acta Agriculturae Jiangxi

基　　金：国家"十五"攻关项目(2001BA509B07);湖北省重点科学技术项目(992P0504)

摘　　要：防除油菜田杂草药效试验结果表明:施用50%乙·异噁松EC有效成分525～1125 g/hm2后第30、60、90 d对看麦娘、网草和牛繁缕的综合密度防效分别为92.32%～100%、91.07%～99.68%、92.07%～99.83%,第90 d的综合鲜重防效高达93%以上;施用该药剂能显著提高油菜田间的透光率,降低杂草对田间养分和水分的吸收,对油菜的增产率为29.01%～29.48%.The results of rape field experiment showed that the synthetic control effects of applying 50% Metazachlor·Clomazone EC 525~1125 g(ai)/hm2 against the density of Aolpecurus aequalis,Beckmannia erucaeformis and Malachium aquaticum were 92.32%~100%,91.07%~99.68% and 92.07%~99.83% respectively on the 30th,60th and 90th day after spraying,and its synthetic control effect against the fresh weight of above three weeds reached to over 93% on the 90th day after spraying.The application of 50% Metazachlor·Clomazone EC could significantly improve the light condition in rapeseed field,reduce the absorption of weeds to nutrition and water,and enhance rapeseed yield by 29.01%~29.48%.

关 键 词：油菜田杂草 药效试验 Control Effect 综合 有效成分 鲜重防效 田间 试验结果 施用 增产率 透光率 牛繁缕 看麦娘 药剂 养分 吸收 水分 密度 

分 类 号：S[农业科学]