吡嘧·丙草胺WP防除水稻田一年生杂草的效果及安全性  

Efficacy and Selectivity of Pyrazosulfuron·Pretilachlor-ethyl WP on Annual Weeds in Paddy Fields

作　　者：顾慧玲[1] 周加春[1] 李红阳[1] 张俊喜[1] 姜勇[1] 孙星星[1] 王厚高[1] 

机构地区：[1]江苏沿海地区农业科学研究所植保室,江苏盐城224002

出　　处：《杂草科学》2015年第4期31-34,共4页Weed Science

摘　　要：为明确55%吡嘧·丙草胺可湿性粉剂(WP)对水稻田中稗草、水苋菜、异型莎草、鳢肠、千金子的防效以及对水稻的安全性,进行防除水稻抛秧田一年生杂草的药效试验。结果表明:水稻抛秧后7~10 d用55%吡嘧·丙草胺WP 1 050 g/hm^2拌细潮土225 kg/hm^2人工撒施作土壤封闭处理,可以有效防除稗草、水苋菜、异型莎草、鳢肠、千金子,药后45 d株防效达88.33%,鲜质量防效达93.29%,对总杂草的防效均极显著高于对照药剂375 m L/hm^210%吡嘧磺隆WP、1 200 g/hm^230%丙草胺乳油单剂,对抛秧水稻安全。The efficacy of pyrazosulfuron· pretilachlor-ethyl 55%WP on Echinochloa crus-galli,Ammannia baccifera, Cyperus difformis,Eclipta prostrata and Euphorbia lathyris and its selectivity to rice seedlings was studied field experi-ments.The mixture at 1 050 g/hm2 combined with fine soil at 225 kg/hm2 as a pre-emergentce treatment,effectively controlled the five weed species.At 45 days after treatment,weed control was 88.3% with a fresh weight reduction of 93.3%.Pyrazosulfuron· pretilachlor-ethyl 55% WP provided significantly better control than pyrazosulfuron-ethyl 10%WP wat 375 mL/hm2 and pretilachlor 30%EC at 1 200 g/hm2 ,having selectivity to rice seedlings.

关 键 词：55%吡嘧·丙草胺WP 抛秧水稻 一年生杂草 防效 安全性 

分 类 号：S451.21[农业科学—植物保护]