几种药剂防除直播稻田水三棱草初探

[目的]探讨几种药剂防除直播稻田水三棱草的效果。[方法]设计克草绅、灭草松、克草绅+灭草松3种组合防除直播稻田水三棱草。试验期间正常管理。[结果]在直播稻田水稻5叶期后,采用10%克草绅450g/hm2可有效防除6叶期以下的水三棱草,14d后株防效为91.64%,21d后株防效为86.21%,鲜重防效为94.72%。[结论]10%克草绅可以作为在江苏省淮安地区水稻5叶期后防除水三棱草的药剂值得大量推广。

Study on the Effects of Several Herbicides to Juneellus Serotinus in Direct Sowing Rice Field

[Objective] The research aimed to study the effects of several herbicides to Juncellus serotinus.[Method] Three groups including Kecaoshen,Miecaosong,Kecaoshen Miecaosong were designed to remove the Juncellus serotinus in Direct Sowing Rice Field.The normal management was made during the experiment.[Result] The result showed that 10% Kecaoshen at the level of 450 g/hm2 could remove the less 6 leafs Juncellus serotinus.The ratio of 14th day individual weeding was 91.64% and the 21th day individual weeding was 86.21%,the ratio of fresh body weeding was 94.72%.[Conclusion] 10% Kecaoshen was worth extending largely as herbicides of removing Juncellus serotinus in Huaian region of Jiangsu province.