摘要
According to the poor nutrient and soil salinization of Wuwei industrial park in Gansu in Northwest arid region,we collected a large number of samples in the region and measured the soil salinity and nutrient content in 020cm. By the statistical analysis and comparison the values of the water content, pH, salinity, organic matter andavailable nitrogen phosphorus and potassium (NPK) in Table 1, our results indicated that: (1) In the sample region,besides the low water content, the degree of soil salinization is predominant and the majority of soil belong to themoderate or severe saline-alkali land. (2) Due to the low nutrient content, the soil is relatively poor. There areobvious differences between the soil organic matter and the available NPK[1]. In short, the nitrogen contents ofthe soil in the region are seriously rare. The available phosphorus contents were at a moderate or deficient level,and the available potassium contents were at a sufficient level or an adequate level compared with the classificationstandard of the second general survey of soil (Table 2).
