河南省新乡市是全国小麦主产基地之一,常年种麦约400万亩,占耕地面积的70%。近年来杂草危害已成为影响小麦产量的一个重要方面。据调查统计,全市约有200万亩以上的麦田发生不同程度的草害。一般每平方米有杂草100～300株,多的高达500株以上。使小麦减产1～4成,甚至发生草荒。几年来的试验结果和大田调查表明,采用化除技术比人工除草的麦田 Xinxiang City, Henan Province, is one of the main wheat producing bases in China. It grows about 4 million mu of perennial wheat, accounting for 70% of the total cultivated land. In recent years, weed hazards have become an important aspect of wheat yield. According to the survey statistics, about 2 million mu of wheat fields in the whole city have different levels of grass damage. Generally there are 100 to 300 plants per square meter of weeds, more than 500 more. Wheat reduced 1 to 4 percent, or even grassland shortage occurred. Several years of test results and field surveys have shown that the use of technology than the artificial weeding wheat field