40%灭草松·唑草酮水分散粒剂防除水稻直播田莎草及阔叶杂草的效果  

Sedge and Broadleaf Weed Control Effects of Bentazone· Carfentrazone-ethyl 40% WG in Direct Seeding Paddy Fields

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》2013年第10期761-764,共4页Agrochemicals

基　　金：第三方农产品质量检测和追溯认证外包服务台的关键技术和创新机制研究及示范项目(2010B090400508);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40％灭草松·唑草酮WG对水稻直播田莎草及阔叶杂草的防除效果、使用剂量、使用适期及安全性。【方法】分别于施药后7、15、30d调查杂草株数、杂草鲜质量、水稻安全性，水稻成熟后测产。【结果】在水稻5叶期，杂草3—5叶期，施用40％灭草松。唑草酮wG用量为600—720ga．i．／hm2，防除效果显著，对水稻安全。【结论】在推荐使用剂量内对水稻直播田莎草及阔叶杂草的防除效果显著，对水稻安全，是一种理想的水稻直播田除草剂。[Aims] The aim of this study is to determine the control efficacy of bentazone＂ carfentrazone-ethyl 40% WG on sedge and broadleaf weeds, optimal dosage, suitable period and to investigate the rice safety in direct seeding paddy fields. [Methods] The weed trees, weed flesh weight, cultivated rice safety were investigated on 7, 15, 30 d after treatment. [Results] The results showed that bentazone＂ carfentrazone-ethyl 40% WG displayed significant control effect on the broadleaf weeds （Sphcnoclea zeylanica L., Ludwigia prostrata） and sedge weeds （Fimbristylis miliacea L. Vahl） at recommended dose of 600-720 g a.i./ha of at 5 leaf stage office and 3-5 leaf stage of weed and it is safe on rice. [Conclusions] Bentazone carfentrazone-ethy140% WG is safe on rice with good efficacy on broadleaf weeds and sedge weeds at recommended dose, which is an ideal herbicide in the direct seeding paddy fields.

关 键 词：40％灭草松·唑草酮wG 水稻 阔叶杂草 莎草 

分 类 号：S482.4[农业科学—农药学]