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采用田间小区试验方法,研究了18%二甲戊灵·异恶草松可湿性粉剂防除稻田杂草药效试验。结果表明在水稻移栽5～7d,缓苗后施用剂量为有效成份0.1755～0.351kg/hm2,对稗草的防效幅度为95.8%～100%,对各种阔叶杂草的防效幅度为80.0%～100%,对莎草科杂草的防效幅度为86.7%～100%,对各种杂草的鲜重抑制效果为93.6%～99.9%。杀草谱广,持效期长,而且对水稻生长发育无不良影响,增产幅度为18.8%～37.5%。
A field plot test was conducted to study the efficacy of 18% pendimethalin and clomazone WP in controlling weeds in paddy field. The results showed that in the 5 ~ 7 days after transplanting rice, the effective dose of 0.1755 ~ 0.351kg / hm2 after rehumidification applied to barnyardgrass was 95.8% ~ 100%, and the control effect on broadleaf weeds Was 80.0% ~ 100%, the control effect of sedge weeds was 86.7% ~ 100%, and the fresh weight of various weeds was 93.6% ~ 99.9%. Broad spectrum of herbicides, long lasting effect, but no adverse effects on the growth and development of rice, yield increase of 18.8% ~ 37.5%.