草铵膦在转基因抗除草剂杂交稻直播栽培中的应用效果  

Application Effect of Glufosinate in Direct Seeding Cultivation of Transgenic Herbicide Resistant Hybrid Rice

作　　者：周浩[1] 杨益善[2] 唐俐[2] 肖国樱[1] 

机构地区：[1]中国科学院亚热带农业生态研究所/亚热带农业生态过程重点实验室,湖南长沙410125 [2]国家杂交水稻工程技术研究中心,湖南长沙410125

出　　处：《作物研究》2013年第5期427-430,共4页Crop Research

基　　金：国家转基因生物新品种培育科技重大专项(2011ZX08001-003);国家转基因抗除草剂品种中试与示范项目(2012ZX08013005)

摘　　要：以转基因抗除草剂杂交早稻“株1S／Bar68—1”为材料，常规除草剂2次除草方式为对照，探讨了草铵膦1次除草方式在水稻直播栽培中的应用效果。结果表明：与常规除草（效果表现为千金子草害）相比，灭生性除草剂草铵膦除草对供试材料株叶形态无显著影响，但使田间杂草数量减少85．3％，减少产量损失33．1％，节约成本37．5％。“株1S!Bar68—1”直播栽培中应用草铵膦除草剂1次除草的技术要点为：草铵膦有效成分0．6g／L，每公顷用量720—960L（有效成分剂量432～576g／hm2），于分蘖末期紧挨冠层均匀喷雾，冒头杂草重点喷施。The weed control effect of glufosinate in direct seeding field of transgenic herbicide resistant early hybrid rice Zhu 1 S/Bar68 - 1 was studied with conventional herbicide as control. The results indicated that the plant type of hybrid rice was not obviously ＇affected, but the stems of weed were decreased by 85.3%, the grain yield loss was decreased by 33. 1% and the weeding cost was decreased by 37.5% in treatment of spraying glufosinate once compared to control. The key techniques of weed control by glufosinate on direct seeding rice included that the dosage of glufosinate was 432 - 576 g （a. i. ）/hnl2 and the glufosinate should be sprayed close to rice canopy at the end of tillering stage.

关 键 词：转基因水稻 抗除草剂 草铵膦 直播栽培 

分 类 号：S511.01[农业科学—作物学]