磺酰脲类除草剂对玉米敏感性研究

The Study on Sensitivity of Sulfonylurea Herbicides to maize Varieties

采用室内模拟添加法和盆栽法分别研究了不同玉米品种对磺酰脲类除草剂的敏感性和磺酰脲类除草剂对敏感玉米品种苗期影响。结果表明 :供试玉米品种对磺酰脲类除草剂存在不同程度的敏感性差异 ,该类除草剂 ED5 0 /50以上浓度对玉米苗期的根长、株高。

Using the method of modeling indoor, the sensitivity of different maize varieties to sulfonylurea herbicides was studied. In addition, with the method of planting in pot, the effect of sulfonylurea herbicides to sensitive maize varieties in seedling was observed. The results showed that there were different sensitivity to sulfonylurea herbicides among different maize varieties. The concentration of sulfonylurea herbicides in soil beyond ED 50 /50 had clearly effect on length of roots、hight of plants、area of leaves in maize seedling stage.