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为解决山西省高粱田杂草防除难的问题,采用完全随机区组的试验方法进行了山西省高粱田土壤封闭剂和茎叶处理剂的筛选研究。结果表明:播后苗前土壤处理,莠去津、金都尔和2,4-D丁酯单剂用量分别在6750、1350、1200 m L/hm~2以下时,高粱出苗安全且除草效果好;莠去津和金都尔复配组合最优配比为5250 m L/hm~2+900 m L/hm~2。苗后茎叶处理,除草单剂二氯喹啉酸、莠去津、二甲四氯、2,4-D丁酯除草效果较好且对高粱产量影响较小,使用剂量分别为750 g/hm~2、2700 g/hm2、1500 g/hm~2、1050 m L/hm~2;复配剂最优配比为莠去津2250 g/hm~2+二氯喹啉酸600 g/hm~2、莠去津2250 g/hm~2+2,4-D丁酯300 m L/hm~2和苯达松3000 m L/hm~2+二氯喹啉酸750 g/hm~2。
In order to solve the problem of weed control in sorghum field in Shanxi Province, we conducted a screening test of soil sealers and stems and leaves in sorghum field in Shanxi province using a completely randomized block test. The results showed that the safe and herbicidal effect of sorghum emergence was achieved when the soil was treated with a single dose of 6750, 1350 and 1200 m L / hm ~ 2 respectively The best combination of Atrazine and Kindour was 5250 m L / hm ~ 2 + 900 m L / hm ~ 2. The effect of herbicidal single-leaf quinclorac, atrazine, MCPA and 2,4-D butyl herbicides was better and had less effect on the yield of sorghum. The application rates were 750 g / hm ~ 2,2700 g / hm2, 1500 g / hm ~ 2,1050 m L / hm ~ 2, respectively. The optimum formulation of the mixture was atrazine 2250 g / hm ~ 2 and quinclorac 600 g / hm ~ 2. Atrazine 300 m L / hm ~ 2 for 2250 g / hm ~ 2 + 2,4-D butyl and 3000 m L / hm ~ 2 for bentazon and 750 g / hm ~ 2 for quinclorac.