不同质地土壤交换性钙含量。不同质地的耕层土壤交换性钙含量差异不大，砂质

The exchangeable calcium content of different texture soils. The exchangeable calcium content of the plow layer soils with different textures is not much different, the sandy soil is slightly higher than the loamy soil, the average content is 1186.08mg/kg, the variation range is 169.3~2291mg/kg, the standard deviation is 642.14mg/kg, and the coefficient of variation is 54.14 %

The content of soil exchange calcium of different textures. There was little difference in soil exchange calcium content of different layers, sand soil slightly higher than the soil, with an average content of 1186.08mg/kg, a variation of 169.3 to 2291mg/kg, a standard deviation of 642.14mg/kg, a coefficient of variation 54.14%

The content of exchangeable calcium in soil with different texture. The average content of exchangeable calcium in sandy soil was 1186.08mg/kg, ranging from 169.3 mg / kg to 2291 mg / kg, and the standard deviation was 642.14 mg / kg, and the coefficient of variation was 54.14%