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为验证50%仲灵.乙草胺乳油对大豆田杂草的药效、杀草谱及对大豆生长的安全性,采用播后苗前土壤喷雾处理、定期调查的方法进行田间药效试验。结果表明,药剂50%仲灵.乙草胺乳油的杀草谱较广,对一年生禾本科杂草及大部分阔叶杂草有良好的防效。施药后20 d调查,对各种杂草株防效为77.0%～96.3%;施药后40 d调查,对各种杂草株防效为79.5%～97.0%。对大豆产量未见不良影响。50%仲灵.乙草胺乳油适宜有效成分用量为1500～2250 g/hm2,对水750L/hm2,播后苗前土壤喷雾。
In order to verify the efficacy of 50% Zhongling acetochlor EC on weed in soybean field, herbicide control spectrum and safety of soybean growth, the field efficacy test was carried out by using soil spraying before sowing and regular investigation. The results showed that the herbicide 50% Zhongling and acetochlor EC had a broad spectrum of herbicidal activity against grass annual weeds and most broadleaf weeds. The control effect on various weeds was 77.0% ~ 96.3% after 20 days of application. After 40 days of application, the control effect on various weeds was 79.5% -97.0%. No adverse effects on soybean yield. 50% Zhongling acetochlor EC suitable dosage of 1500 ~ 2250 g / hm2, on the water 750L / hm2, after sowing before spraying the soil.