Building of Correlation Model between Components of Organic Carbon and Nutrients in Soils with Different Reclamation Years
Jin Jianxin
Zhang Na
He Jinqin
Gui Linguo
Abstract：In order to analyze the effects of long-term tillage on soil quality and the correlation between components of soil organic carbon and soil fertility,the soil samples with planting ages from 0 to 30 years were selected from different regions of Ningxia,and the nutrient indexes and component contents of organic carbon were determined.The weight of each nutrient value was calculated by AHP method,and then the comprehensive score of soil nutrient was obtained.The relationships between soil nutrient comprehensive value and soil organic carbon components was evaluated by quadratic parabola model.The results showed that μ-Silt,d-Silt and iPOM had the most influential effects on soil fertility,among which,the interaction effect of μ-Silt and d-Silt was the largest.In the planting period from 0 to 30 years,the overall performance of soil nutrient content showed a trend of increasing,but when the reclamation year was from 21 to 25,the nutrient content showed a minimum value,and when the reclamation year was more than 25,the other nutrient indicators except potassium content showed a linear increase trend.
Keywords：Reclamation yearOrganic carbonComponentSoil nutrient
Publication Date：2018-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 81-85 )