According to the data of grass yield and soil physics-chemistry parameters, the plenitude-lack maps were figured to show the content of soil physics-chemistry parameters in the investigation area.

• 以精细农业思想为指导，利用GIS技术和草地产草量及草地土壤理化性质数据，绘制出草地土壤理化性质丰缺分布图，为退化草地的恢复和改良提供依据。