黑龙江省现有耕地面积中,约有一半存在程度不同的水土流失。在这些地方,耕作方法不尽合理是促成地力减退、侵蚀加剧、粮食产量降低的主要原因之一。我们从1980年开始,对传统的垄作少耕、覆盖、深松和平翻等四种耕作方法的保土增产效益进行了试验研究,为有效地治理与合理利用坡耕地,恢复土壤肥力,提高生产效率与经济效益提供依据。 About half of existing cultivated land in Heilongjiang Province has soil and water loss with different degrees. In these areas, the unreasonable cultivation methods are one of the main reasons contributing to the decline of soil fertility, erosion and grain output. Since 1980, we have conducted experimental studies on the yield-increasing benefits of the four methods of tillage, including tillage, covering, deep-rooted and flat-tillage, in order to effectively manage and rationally use sloping farmland, restore soil fertility and increase production Efficiency and economic benefits provide the basis.