摘要
选择水稻田10种单子叶杂草和4种双子叶杂草为研究对象,通过室内试验明确供试杂草对灭生性除草剂草甘膦和草铵膦的敏感性差异,为将来抗草甘膦和抗草铵膦转基因水稻商业化生产中杂草防除提供依据。结果显示不同杂草对2种灭生性除草剂的敏感性存在差异,41%草甘膦异丙胺盐水剂和18%草铵膦可溶液在最高剂量下对供试杂草达到药害5级所需时间分别为5～13 d和4～9 d,杂草对草甘膦的反应速度比对草铵膦的慢,杂草对41%草甘膦异丙胺盐水剂和18%草铵膦可溶液的ED90分别为5.12～6. 05 kg/hm2和2.49～2. 87 kg/hm2。对41%草甘膦异丙胺盐水剂较不敏感的杂草有稗草(二氯喹啉酸抗性和敏感性生物型)(Echinochloa crusgalli L.)、杂草稻(泰州、益阳、茂名生物型)(Oryza sativa f. spontanea)、异型莎草(Cyperus difformis L.)、碎米莎草(C. iria L.)和丁香蓼(Ludwigia prostrate Roxb.);对18%草铵膦可溶液较不敏感的杂草有稗草(二氯喹啉酸抗性和敏感性生物型)、硬稃稗(二氯喹啉酸抗性生物型)(E. glabrescens Munro ex Hook f.)、光头稗(E. colonum L.)、长芒稗(E. caudata Roshev.)、异型莎草、碎米莎草、耳叶水苋(Ammannia arenaria H. B. K.)和多花水苋(A. multiflora Roxb.)。因此在抗草甘膦和草铵膦水稻商业化生产中需要密切关注对草甘膦和草铵膦较不敏感杂草的种群动态,并探索相应的杂草防除策略。
In order to detect the sensitivity difference of weeds in rice field to non-selective herbicides,glyphosate and glufosinate,and provide basis for future weeds control in glyphosate-resistant and glufosinate-resistant transgenic rice commercial production,bioassay was conducted on ten monocotyledons weeds and four dicotyledons weeds.The results showed that days which were required for weeds reaching injury level five after applying 41%glyphosate isopropylammonium AS and 18%glufosinate-ammonium SL were 5-13 days and 4-9 days,respectively,and response speed of weeds to glyphosate was slower than that to glufosinate.ED 90 values of these weeds to 41%glyphosate isopropylammonium AS and 18%glufosinate-ammonium SL were 5.12-6.05 kg/hm^2 and 2.49-2.87 kg/hm^2,respectively.Weeds displayed less sensitive to 41%glyphosate isopropylammonium AS were Echinochloa crusgalli L.(resistant and sensitive to quinclorac),three biotypes of Oryza sativa f.spontanea,Cyperus difformis L.,C.iria L.,and Ludwigia prostrate Roxb..Weeds displayed less sensitive to 18%glufosinate-ammonium SL were E.crusgalli L.(resistant and sensitive to quinclorac),E.glabrescens Munro ex Hook f.(resistant to quinclorac),E.colonum L.,E.caudata Roshev.,Cyperus difformis L.,C.iria L.,Ammannia arenaria H.B.K and A.multiflora Roxb..Therefore,these weeds which demonstrated less sensitive to glyphosate and glufosinate should be paid more attention to their population dynamics in the commercial production of glyphosate-resistant and glufosinate-resistant rice.
作者
张玉池
刘琪
相世刚
强胜
宋小玲
ZHANG Yu-chi;LIU Qi;XIANG Shi-gang;QIANG Sheng;SONG Xiao-ling(Weed Research Laboratory,College of Life Sciences,Nanjing Agricultural University,Nanjing 210095,China)
出处
《江苏农业学报》
CSCD
北大核心
2018年第6期1260-1266,共7页
Jiangsu Journal of Agricultural Sciences
基金
转基因生物新品种培育重大专项课题(2016ZX08011-001)
关键词
稻田杂草
草甘膦
草铵膦
敏感性
weeds in rice field
glyphosate
glufosinate
sensitivity
