Analysis of soil nutrients content of newly-increased farmland in the process of land consolidation in Lintong District

The objective of this study is to analyze the characteristics of nutrients content in the soil of the newly-increased farmland in the process of land consolidation and find out the factors that affect land productivity,so as to better the result of land consolidation.17 soil samples from the newly-increased farmland converted from the former land use types of road,channel and sparse forest were collected in the land consolidation project in Xinfeng of Lintong District.The content of bulk density,soil organic matter,total N,available P,available K,base-exchange capacity,pH and total salt were measured and the characteristics of nutrient content were analyzed with the software of SPSS.The results show that the content of soil nutrients of the newly-increased farmland is low,and the mean values of bulk density,soil organic matter,total N,available P,available K,pH,total salt and base-exchange capacity are respectively 1.54 g/cm3,5.37 g/kg,0.54 g/kg,5.42 mg/kg,73.23 mg/kg,8.51,573.81 mg/kg and 12.41 cmol/kg.The former land use types do affect the change of nutrients in different kinds of newly-increased farmland.The correlation between each nutrient is weak.The correlation coefficients of soil bulk density and organic matter,base-exchange capacity,total salt and available K,base-exchange capacity and total salt are-0.54,0.58,-0.62 and-0.68.It is concluded that the soil nutrients accumulation of the newly-increased farmland is not at a high level,and the reason is that soil organic matter is low.To improve the oproductivity of newly-increased farmland,more importance should be attached to increasing soil organic matter content through application of both organic and inorganic fertilizers.