在公主岭黑土同一地块连续１３ａ实行少耕法，其土壤理化性状变化对玉米产量未见不良影响，不仅没有减产，还有明显的增产效果，但杂草群落变化较大，值得重视。实行少耕，节省多项作业次数，减少大量能源和机耕费，降低生产成本，减少劳动力，减轻劳动强度，生态效益、经济效益十分显著。 In the same plots of Gongzhuling black soil, the practice of less tillage was carried out continuously. The change of soil physical and chemical properties had no adverse effect on corn yield, which not only did not decrease the yield, but also obviously increased yield, but the change of weed community was worth paying attention to. The implementation of less tillage, save a number of operations, reduce the amount of energy and tillage costs, reduce production costs, reduce labor, reduce labor intensity, ecological benefits, economic benefits are significant.