31%苯·吡·甲草胺泡腾颗粒剂防除水稻移栽田杂草试验  

The Test of Mefenacet·Pyrazosulfuron-ethyl·Alachlor 31% EA for Control of Annual Weeds in Paddy Field

作　　者：张栋梁[1] 沈雪峰[1] 陈勇[1] 

机构地区：[1]华南农业大学农学院杂草研究室,广州510642

出　　处：《农药》2014年第3期214-216,233,共4页Agrochemicals

基　　金：公益性行业(农业)科研专项经费资助(现代农作模式构建与配套技术研究与示范201103001)

摘　　要：【目的】明确31％苯·吡．甲草胺泡腾颗粒剂防除早晚两造水稻移栽田一年生杂草的防除效果、使用剂量、使用适期及其安全性。【方法】采用田间小区试验方法。【结果】该药剂在水稻移栽返青期，推荐剂量186．0-372．0ga．i．／hm2，能够有效防除一年生禾本科杂草、阔叶杂草和莎草科杂草，重点防除稗草、丁香蓼、水花生、碎米莎草和水虱草等杂草。【结论】在推荐使用剂量内对水稻安全，但高剂量会产生一定的药害，是一种方便高效经济安全的水稻移栽田除草剂。[Aims] The aim of this study is to determine the control efficacy of mefenacet＋pyrazosulfuron-ethyl＋alachlor 31% EA on annual weeds, optimal dosage, suitable period and to investigate the rice safety in transplanted rice field. [Methods] Field trial method was used. [Results] The results showed that the mefenacet＋pyrazosulfuron-ethyl＋alachlor 31% EA can control effectively on annual grasses weeds [Echinochloa crusgalli（L.） Beauv.] and annual broadleaf weeds [Ludwigia prostrata and Alteraanthera philoxeroides （Mart.） Griseb.] and sedge weeds （Cyperusiria L. and Fimbristylis miliacea L. Vahl） with recommended dosage of 186.0-232.5 g a.i./ha before the rice transplanting turns green. [Conclusions ] Mefenacet＋pyrazosulfuron-ethyl＋alachlor 31% EA is safety on rice at the recommended dose, but higher application concentration led to phytotoxicity. The m yl＋alachlor 31% EA is a convenient, economic, efficacious and safe herbicide in the transplanted rice field.

关 键 词：31%苯·吡·甲草胺泡腾颗粒剂 水稻 移栽田 一年生杂草 

分 类 号：S451.21[农业科学—植物保护]