50%四唑草胺·苄嘧磺隆WP防除水稻直播田杂草的效果  

Effects of Weed Control in Direct-Seeded Rice Field Treated with the Compound of 50% Bensulfuron-Methyl and Fentrazamide

作　　者：朱文达[1] 柯愈祥 李林[1] 

机构地区：[1]湖北省农业科学院植保土肥研究所,武汉430064 [2]咸宁市职业教育集团学校,湖北咸宁437038

出　　处：《湖北农业科学》2012年第12期2473-2475,共3页Hubei Agricultural Sciences

基　　金：国家"十一五"科技支撑计划项目(2006BAD08A09)

摘　　要：通过田间试验研究50%四唑草胺·苄嘧磺隆WP对直播稻田杂草的控制效果和对水稻产量的影响,为直播稻田草害的化学防控提供依据。试验结果表明,每公顷使用50%四唑草胺·苄嘧磺隆WP有效成分112.5～187.5 g对直播稻田的稗草[Echinochloa crusgalli(L.)Beauv]、鸭舌草[Monochoria vaginalis(Burm.F.)]等均具有良好的防治效果,综合鲜重防效达到90%以上,优于对照药剂50%拜田净WP和10%苄嘧磺隆WP。施用50%四唑草胺·苄嘧磺隆WP能有效降低杂草对田间氮、磷、钾和水分的吸收,改善田间光照和水肥条件,水稻增产效果明显。To provide guidance for chemical weed management in the effects on weed control and crop yield of the compound mixed direct-seeded rice fields, trials were conducted to evaluate with 50% bensulfuron-methyl and fentrazamide. The results showed that 50% wettable powder mixed with bensulfuron-methyl and fentrazamide at the dose of 112.5-187.5 g/hm2 had good control on Echinochloa crusgalli （L.） Beauv, Monochoria vaginalis （Burm.F.）. The overall fresh control effects were over 90% which were better than that of 50% fentrazamide WP and 10% bensulfuron-methyl WP. The application of 50% wettable powder mixed with bensulfuron-methyl and fentrazamide significantly reduced the weeds absorption of nutrition and water, and improved the light and moisture of the field which resulting in prominent yield enhancing.

关 键 词：杂草防效 四唑草胺.苄嘧磺隆WP 养分 水分 产量 

分 类 号：S451.21[农业科学—植物保护]