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本文研究了东北地区几种主要土壤磁化率及其与土壤肥力的相关性。耕地棕壤及耕地滨海盐土的土壤磁化率与土壤有机质含量间有显著的直线函数关系。沈阳、海城地区耕地棕壤磁化率与有机质相关方程为:y=-0.31+0.027x;锦西地区棕壤其相关方程为 y=-0.2+0.0105x;滨海盐土相关方程为 y=-0.27+0.072x。三个地区土壤有机质与士壤磁化率相关系数(r 值)是极其显著(r 值为0.88、0.93及0.73)的。这里给我们提出一个问题,能否将不同地区不同类型的耕作土壤,求出相应的土壤有机质与土壤磁化率间相关方程,以便通过测定土壤磁化率来定量的求出有机质的含量。土壤磁学正在发展。土壤磁化率与有机质、土壤肥力的相关性及其变化规律的许多理论问题有待于今后的研究工作。
In this paper, several main soil magnetic susceptibility and its correlation with soil fertility in Northeast China were studied. There is a significant linear relationship between soil magnetic susceptibility and soil organic matter content in arable land brown soil and cultivated land coastal saline soil. The correlation equation of magnetic susceptibility and organic matter of brown soil in arable land in Shenyang and Haicheng was: y = -0.31 + 0.027x; correlation equation of brown soil in Jinxi was y = -0.2 + 0.0105x; correlation equation of coastal saline soil was y = -0.27 + 0.072x. The correlation coefficients (r values) of soil organic matter and lean soil magnetic susceptibility in the three regions were extremely significant (r = 0.88, 0.93 and 0.73). Here we ask a question whether we can find the correlation equation between soil organic matter and soil magnetic susceptibility in different types of cultivated soils in different regions so as to determine the content of organic matter quantitatively by measuring the magnetic susceptibility of soil. Soil magnetism is developing. Many theoretical issues about the relationship between soil magnetic susceptibility and organic matter, soil fertility and its variation have to be studied in the future.