在贵州中部采取0~1000cm土层的黄壤样品,分析了土壤基本理化性质,测定了土壤水分特征曲线,采用数理统计方法对数据进行了整理与分析。贵州中部低山丘陵区黄壤粘粒含量高。〈0.01mm颗粒含量806.23~686.2g/kg,〈0.001mm粒径颗粒含量651.05~263.57g/kg,粘粒含量高.犁底层透水性差,不利于降雨入渗。黄壤的持水量高,有效水的范围极窄10~100cm土层总库容5515.3m^3/hm^2。贮水库容4094.1m^3/hm^2,有效水库容仅9.69%,其比例较广州赤红壤 ...
蒋太明 +5 more
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