论文部分内容阅读
辽西地区是辽宁省重要的粮食生产基地。该区坡耕地占当地总面积额的66.5%,降雨集中且分布不均,造成该区坡耕地水土流失严重,由此带来的植被退化,土壤抗风蚀、水蚀性差,耕层土壤变薄,土壤有机质下降,肥料利用率低及作物产量低等一系列问题已经成为制约辽西地区农业经济发展的主要障碍因子。针对这些问题提出建议,第一,探寻出适宜当地的合理耕层构建模式;第二,提升坡耕地农机作业水平。利用该区独有的环境资源为基础,为解决好由风蚀、水蚀等造成的坡耕地质量下降,耕层变浅等一系列问题,提供技术支撑。
The western Liaoning Province is an important grain production base. Slope cultivated land in this area accounts for 66.5% of the total area. Rainfall is concentrated and unevenly distributed, resulting in serious soil and water loss on sloping farmland in the region. The vegetation degradation, soil erosion, water erosion and soil thinning, A series of problems, such as the decline of soil organic matter, the low utilization rate of fertilizer and the low crop yield, have become the main obstacle factors that restrict the development of agricultural economy in western Liaoning. In response to these problems, first, to find a suitable local rational model of building plow; second, to enhance the level of agricultural operations on sloping farmland. Based on the unique environmental resources in this area, it provides technical support for solving a series of problems such as the decline of the quality of sloping farmland caused by wind erosion and water erosion and the shallowing of topsoil.