80%双草醚可湿性粉剂防除水稻直播田杂草试验  

Experiment of 80% Bispyribac-sodium WP on Weeds in Direct Seeding Rice Field

作　　者：肖学明[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,广东广州510642

出　　处：《作物杂志》2014年第2期142-145,共4页Crops

基　　金：公益性行业(农业)科研专项"杂草抗药性监测及治理技术研究与示范"(201303031)

摘　　要：2012—2013年采用大田药效试验的方法，研究了80％双草醚可湿性粉剂对于华南地区早稻和晚稻田杂草的防除效果、最佳使用剂量及其安全性。结果表明：该药剂在水稻田稗草2～3叶期进行茎叶喷雾处理，使用推荐剂量37．5～45．0ga．i．／hm^2，能有效防除稗草等一年生禾本科杂草及异型莎草、碎米莎草、水虱草等莎草科杂草和尖瓣花等阔叶杂草，在推荐使用剂量内对水稻安全，高浓度处理没有药害发生。Using the field efficacy test method, the effect of 80% Bispyribac-sodium WP on weeds in direct seeding rice field was determined and the rice safety was investigated in the early and late seasons from 2012 to 2013 in south China. The results showed that the control efficacy of grasses weeds [ Echinochloa crusgalli （L.） Beauv ], cyperaceae weeds [ Cyperus difformis L., Cyperus iria L., Fimbristylis miliacea （ L. ） Vahl ] and annual broadleaf weeds （Sphenoclea zeylanica Gaertn） was significantly increased by 37.5 -45.0g a. i./hm^2 80% Bispyribae-sodi- um WP when the rice field＇ s barnyard was in 2 - 3 leaf stage with spray processing. The rice was safety with the recommended dose, and no phytotoxicity with higher concentration.

关 键 词：双草醚 水稻 杂草 安全性 

分 类 号：S451.21[农业科学—植物保护]