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双氟磺草胺、2甲4氯联合作用及作物安全性评价

, PP. 557-563

Keywords: 双氟磺草胺,2甲4氯,共毒系数,除草效果,安全性

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Abstract:

为明确双氟磺草胺、2甲4氯复配的联合作用类型及在小麦田应用的可行性,采用温室盆栽生物测定法和田间药效试验,研究了二者对播娘蒿、猪殃殃等的联合毒力、田间除草效果及其对当茬小麦和后茬作物的安全性。结果显示,双氟磺草胺、2甲4氯复配对播娘蒿为增效作用,对猪殃殃为相加或增效作用,二者适宜配比为1:100~120。43%双氟磺草胺·2甲4氯SE(混配比例为1:110)387、516、645和1032g/hm2防除小麦田阔叶杂草效果均较好,秋季施药鲜重防除效果为99%以上,春季为95%以上。43%双氟磺草胺·2甲4氯SE对当茬作物小麦和后茬作物玉米、大豆、花生、棉花出苗和生长均无影响。

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