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为防除稻田玉米杂草 ,在湖南省浏阳沙市镇进行了百农思等除草剂防除稻田玉米杂草试验。用百农思等芽前除草剂 ,在玉米播种后 1d按推荐剂量喷雾 ,每公顷喷药液 90 0 kg,施药后第2 0 d和第 40 d调查各处理的除草效果。结合产量性状 ,按“意见集中评分模糊决策原理”的方法评价除草效果 ,结果表明 ,以施用百农思 180 g/ hm2 的防除效果最好 ,药后 40 d对稻田玉米杂草的株防效和鲜重防效达 80 .69%和 98.60 % ;其次为百农思 150 g/ hm2 +乙草胺 12 0 0 m L/ hm2混用 ,药后 40 d的株防效和鲜重防效 78.62 %和 93.89%。百农思对玉米安全。
In order to control weeds in paddy fields, herbicides such as Bainongsi et al were used to control weeds in paddy fields in Shashi Town, Liuyang, Hunan Province. With 100 Nongsi think of pre-emergence herbicides, 1d after maize sowing the recommended dose of spraying, spraying liquid per hectare 90 0 kg, 20 d and 40 d after spraying to investigate the weeding effect of each treatment. Combined with the yield traits, the herbicidal effect was evaluated according to the “Opinion Opinion Fuzzy Evaluation Principle”. The results showed that the best control effect was 100 g / hm2 and the control effect was 40 d And fresh weight control reached 80.69% and 98.60%, followed by 100% Nongshen 150 g / hm2 + acetochlor 1,200 m L / hm2, respectively. % And 93.89%. 100 Nongsi think of corn safety.