目前,农田杂草的防除已越来越信赖于化学除草剂,结果就出现了环境(土壤、水源等)被污染、生态遭破坏、杂草产生抗药性等公害问题。采用综合生态措施,可最环保、廉价、高效地防除杂草,经济和生态效益显著,值得大力推广。1.农作物覆盖控草作物群体覆盖不仅可通过遮光效应减少杂草 At present, the control of farmland weeds has become more and more dependent on chemical herbicides. As a result, pollution problems such as environment (soil and water sources), ecological damage, weeds and other pollution have emerged. The use of integrated ecological measures, the most environmentally friendly, cheap and efficient control of weeds, significant economic and ecological benefits, it is worth to promote. 1. Coverage of crop cover Crop control covers weeds not only through shading effects