莎车县地形对耕地地力质量的影响及改良对策

土壤发育与地形密切相关，而在土壤发育过程中不同的地形就会对耕地有效土层厚度、灌溉条件和植被产生一系列的重要影响，根据莎车县的地形与土壤形成的关系将莎车县地形概括为5种类型，分别为冲积洪积扇上、中、下部，沙漠边缘，山前洪积平原；依据专家评定出对莎车县耕地地力影响比较大的12个因素和耕地地力评价系统，以不同地形部位的尺度对莎车县耕地地力质量等级划分的影响进行系统分析，明确制约因素，提出更有效的改良利用措施，为提升莎车县耕地高效利用提供科学依据。

Effect of Terrain on Evaluation of Soil Fertility and Improvement and Utilization in Shache County

The development of soil and terrain is closely related to in the process of sqoil development, the terrain greatly affect the soil thickness of farmland, irrigation conditions and vegetation. According to the relationship between terrain and soil formation the terrain of Shache county was summarized 5 types： upper of alluvial diluvial fan, middle of alluvial diluvial fan, bottom of alluvial diluvial fan, edge of the desert, piedmont alluvial plain. In this paper, soil fertility of the cultivated land was systematically graded according to the different landscape scale of development of soils in Shache County. The soil fertility of the cultivated land was divided into 6 grades in the basis of 12 factors by the expert judgment and the cultivated land fertility evaluation system, which analyzed the reasons of different topographic position, limited the soil fertility to proposed measures to improve and use more effective. The scientific basis was provided for enhancing the effective utilization of cultivated land in Shache County.