摘要
为筛选可有效防除甘薯田间杂草且对甘薯生长安全的除草剂,采用茎叶喷雾法在室内测试15种除草剂对甘薯苗的药害作用,筛选出10种对甘薯影响相对较小的除草剂进行甘薯田间杂草防除试验,结果表明25%砜嘧黄隆水分散粒剂90g·hm^(-2)、330g·L^(-1)二甲戊灵乳油1 800mL·hm^(-2)、900g·L^(-1)乙草胺乳油1 050mL·hm^(-2)和960g·L^(-1)精异丙甲草胺乳油1 200mL·hm^(-2)对甘薯田间杂草的防治效果较好,药后50d对不同杂草鲜重的总防治效果可达82%以上,且对作物较安全。进一步选用这4种除草剂进行甘薯田间杂草防除的多点试验,结果表明900g·L^(-1)乙草胺乳油1 050mL·hm^(-2)和960g·L^(-1)精异丙甲草胺乳油1 200mL·hm^(-2)在福州、龙岩、南宁、湛江的效果均较好,可作为南方甘薯田杂草防除药剂。
Various commercially available herbicides were evaluated for weed control on sweet potato fields.The phytotoxicity of 15 herbicides was firstly tested in a chamber on sweet potato seedlings by foliar spray.Then,the 10 that showed no or low toxic effect on the seedlings were subjected to a field test.It was found that the applications of 25%rimsulfuron WDG at 90 g·hm-2,330 g·L-1 pendimethalin EC at 1 800 mL·hm-2,900 g·L-1 acetochlor EC at 1 050 mL·hm-2,and 960 g·L-1 s-metolachlor EC at 1 200 mL·hm-2 were more effective in weed control than the others.The selected herbicides applied at the levels reduced more than 82%on weight of fresh weeds in 50 ds after spraying.In the subsequent multi-location field test,the foliar application of acetochlor or s-metolachlor exhibited superior weed control efficacy with safety.Consequently,it was deemed applicable on sweet potato fields.
作者
邱思鑫
刘中华
余华
邱永祥
纪荣昌
许泳清
罗文彬
李华伟
汤浩
QIU Si-xin;LIU Zhong-hua;YU Hua;QIU Yong-xiang;JI Rong-chang;XU Yong-qing;LUO Wen-bin;LI Hua-wei;TANG Hao(Institute of Crop Sciences,Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350013,China;Institute of Quality Standards and Testing Technology for Agro-Products,Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350003,China)
出处
《福建农业学报》
CAS
北大核心
2018年第2期171-176,共6页
Fujian Journal of Agricultural Sciences
基金
福建省科技计划项目--省属公益类科研院所基本科研专项(2014R1026-10)
现代农业产业技术体系建设专项(CARS10-B14)
福建省财政专项--福建省农业科学院科技创新团队建设项目(STIT2017-2-3)
关键词
甘薯
除草剂
安全评价
杂草防除
sweet potato
herbicide
safety evaluation
weed control
