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为探索防治高粱田杂草的适宜除草剂类型及其对高粱的安全性,采用田间小区试验,分别进行了4种播后苗前封闭除草剂和9种苗后除草剂对高粱田杂草的防除效果、高粱生长的安全性评价以及对高粱产量的影响研究。结果表明:播后苗前封闭处理的药剂为38%莠去津和二甲戊灵混合组合,使用剂量为(1995 g+1950 m L)/hm2,苗后茎叶处理的有效药剂有50%二氯喹啉酸450 g/hm2+50%氯氟吡氧乙酸异辛酯900 m L/hm2、10%乙羧氟草醚450 m L/hm2+50%乙草胺1350 m L/hm2、50%氯氟吡氧乙酸异辛酯900 m L/hm2+50%乙草胺1350m L/hm2,或单施10%乙羧氟草醚450 m L/hm2。以上5种药剂对高粱田杂草有很好的防除效果且对高粱生长安全,高粱产量也有显著提高。
In order to explore the suitable type of herbicide for controlling weeds in sorghum field and its safety to sorghum, four kinds of post-emergence pre-emergence herbicides and nine kinds of post-emergence herbicides on weeds in sorghum field Control effect, safety evaluation of sorghum growth and impact on sorghum yield. The results showed that the combination of 38% Atrazine and Pendimethalin was used in the pre-seedling confinement treatment with a combined dose of (1995 g + 1950 m L) / hm2, effective 50% Quinclorac 450 g / hm2 + 50% Isooctyl fluroride 900 m L / hm2, 10% Fluoroglycoside 450 m L / hm2 + 50% Acetochlor 1350 m L / hm2,50 % Iso-octyl fluroride 900 m L / hm2 + 50% acetochlor 1350 m L / hm2 or 10% flurbafluoren 450 m L / hm2 alone. The above five kinds of medicaments have a good control effect on the weeds in the sorghum field and are safe for growth of sorghum and the yield of sorghum is also significantly increased.