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我国农田杂草有２５０多种，全国农田受草害面积４３００多万ｈｍ２，平均受草害减产１３．４％，每年减产粮食１７５０万ｔ，皮棉２５．５万ｔ和大豆５０万ｔ。传统农业生产采用机械作业及人力等除草。随着农村经济的发展，化学除草面积迅速扩大，全国农田化学除草面积从１９７５年的１７０万ｈｍ２增加到１９９５年的４１３３万ｈｍ２。但是，长期化学除草也带来了除草剂土壤残留对后茬作物药害、农田杂草种群更替和产生抗药性等新问题。必须重视农田杂草综合治理，通过采用各种有效的农业技术措施，为农作物保持良好的生态条件，结合化学除草才是最有效的防除杂草方法
There are over 250 kinds of weeds in our country. The countrywide farmland is affected by more than 4300 million hm2 of weeds and an average of 13.4% of grass planting and yield reduction. The annual grain output is reduced to 17.5 million tons, 255,000 tons of lint and 500,000 tons of soybean. Traditional agricultural production using mechanical operations and human weeding. With the development of rural economy, the area of chemical weed control rapidly expanded. The area of chemical weed control of farmland throughout China increased from 1.7 million hm2 in 1975 to 41.33 million hm2 in 1995. However, long-term chemical weeding has also brought about new problems such as phytotoxicity of crop residues to subsequent crop plants, replacement of weed populations in the fields and emergence of drug resistance. We must attach importance to the comprehensive management of weeds in farmland, through the use of effective agricultural technology and measures to maintain good ecological conditions for crops, combined with chemical weeding is the most effective method of weed control