氟磺胺草醚对作物的药害及解决措施.pdfVIP

第45卷第5期 农药 2006年5月 Agrochemicals May. 2006 应用技术- 氟磺胺草醚对作物的药害及解决措施 卢向阳，徐 筠 (北京市农林科学院 植物保护环境保护研究所，北京 100089) 摘要：氟磺胺草醚在施药不均匀，剂量倍加的情况下可对大豆和后茬敏感作物产生药害。盆栽试验表明， 2 2 氟磺胺草醚剂量为750g/hm时对大豆株高有显著影响，剂量为1500g/hm时大豆株重显著下降。间隔90d播 2 2 种作物，剂量为495g/hm时玉米和小麦株重显著下降；剂量为562.5g/hm时，对油菜株重显著下降；而在 2 推荐剂量375g/hm时，玉米、小麦和油菜的株重没有显著影响。氟磺胺草醚与灭草松混用可以降低前者的 使用剂量，是降低药害风险良好的措施。 关键词：大豆；氟磺胺草醚；药害 中图分类号：S482.4文献标识码：A 文章编号：1006-04 13(2006)05-0350-03 Addressing the problem of fomesafen crop inj ury LU Xiang-yang, X U Jun (In stitute of Plant ＆Enviromental Protection, Beij ing Academy of Agricultural and Forestry Science, Beij ing 100089, China) Abstract : Fomesafen unevenly applied at 2x rates can inj ure susceptible crops. Potted plant experiments indicated significant soybean plant height reductions with fomesafen at 750 g/ha, and significant soybean plant weight reduc- tions at 1500 g/ha. Corn and wheat plant weights were reduced significantly when seeded 90 d after application of fomesafen at 495 g/ha. Rapeseed plant weights w ere significantly reduced when seeded 90 d after application of fomesafen at 562.5 g/ha, while plant weights of corn, wheat, and rapeseed were not significantly affected when seeded 90 d after application of the recommended fomesafen rate of 375 g/ha. Application in mixture with bentazon allowed reduction of the fomesafen use rate and thus provided a useful means of reducing fomesafen crop inj ury . Key words: soybeans; fomesafen ; crop injury 氟磺胺草醚是大豆地防除阔叶杂草的优良除草剂品种 25%氟磺胺草醚(北极星)水剂(江苏连云港立本