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对陇东地区主要农业土壤质地及水分常数的研究表明:各主要土壤类型的质地均属壤土类,但其中的砂粒、粉粒、细粘粒含量差异明显;各类土壤中小于0.005 mm土壤颗粒的含量与土壤吸湿水含量、最大吸湿量、凋萎系数之间具有明显的直线相关性,回归系数均达极显著水平,而与土壤有效水含量无明显相关性。据此提出陇东主要农业土壤的质地改良和水分管理对策。
The main agricultural soil texture and moisture constants in eastern Gansu Province showed that the main soil types are loamy, but the content of sand, silt and fine clay is obviously different among them. The contents of soil particles smaller than 0.005 mm There was a significant linear correlation between moisture content, maximum moisture content and wilting coefficient, and the regression coefficients reached an extremely significant level, but no significant correlation with soil available water content. Based on this, we proposed the improvement of soil texture and water management in the main agricultural soils of eastern Gansu Province.