防除大豆田铁苋菜的茎叶处理除草剂筛选
Plant Protection(2011)
Abstract
铁苋菜(Acalypha australis L.)在黑龙江省大豆田的种群数量及其危害日益严重,农民已将其列为难防杂草。采用盆栽试验方法,筛选了防治铁苋菜的茎叶处理除草剂。结果表明,灭草松、噻吩磺隆、异噁草松、咪唑乙烟酸对2~6叶期铁苋菜无防除效果;防除2叶期铁苋菜,可以施用氟磺胺草醚300g/hm2、乳氟禾草灵90g/hm2、乙羧氟草醚60g/hm2;防除4叶期铁苋菜,氟磺胺草醚施药量需高于300g/hm2,乙羧氟草醚的施药量需高于90g/hm2;防除6叶期铁苋菜,仅能施用氟磺胺草醚,且施药量需高于300g/hm2。
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Key words
foliar-applied herbicide,Acalypha australis L.,soybean field
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