几种除草剂在红花直播田的除草效果

Control Effect of Different Herbicides in Direct Sowing Field of Angelica gigas

[目的]为了探讨既对红花生长无明显影响又能有效防除红花田杂草的化学除草剂。[方法]2007年用43%豆亿EC等4种除草剂对红花进行了播后苗前土壤处理,对各类杂草除草效果和红花的安全性调查。[结果]43%豆亿EC和960 g/L精异丙甲草胺EC对红花田杂草的防除效果最好,株防效分别为93.0%和85.9%;鲜重防效分别为90.8%和80.6%。[结论]43%豆亿EC和960 g/L精异丙甲草胺EC可以应用于红花田除草。

[ Objective] The paper was conducted to discuss the chemical herbicide which could effectively control the weeds in field without influencing Angelica gigas growth. [ Method] 4 herbicides were used in the soil treatment of Angelica gigas after sowing. The control effect of herbicides and the safety of Angelica gigas were investigated. [ Result ] 43% Douyi EC and 960 g/L metolachlor-p EC had the optimum control effect on the weeds in Angelica gigas field. Control effect for each plant were 93.0% and 85.9%,respectively. And the control effect of fresh weight were 90.8% and 80.6%,respectively. [Conclusion] 43% Douyi EC and 960 g/L metolachlor-p EC could be used in the weed control in Angelica gig, as field.