近年来,玉米田化学除草以其省工省时,效果明显,对作物安全可靠等特点,深受农民欢迎。除草剂品种数量增多,技术推广迅速,年推广面积达16万hm~2左右,占玉米面积的三分之二。但是,今年6月下旬却有部分农户反映玉米田化学除草效果不够理想,诸如张家口宣化乙莠水悬浮剂、天津的玉草绝、津乙伴侣、瑞士都阿 In recent years, cornfield chemical weeding with its provincial workers, the effect is obvious, the characteristics of safe and reliable crops, welcomed by farmers. Increasing the number of herbicides, technology promotion rapidly, the annual promotion area of ​​160,000 hm ~ 2, accounting for two-thirds of corn area. However, in late June this year, some farmers reported that chemical herbicidal effects in cornfields were not satisfactory. For example, Zhangjiakou Xuanhua B and D herbicides, Tianjin jade plants and Tianjin B mate,