【摘要】 应用CaCl2 -Ca(OH) 2 中和滴定法与土壤—石灰培养法联合确定红壤中石灰石的最佳投加量。结果表明 ,红壤中石灰石的最佳投加量为中和滴定法的 0 .5倍 ;但在重金属污染的红壤上 ,由于重金属离子对土壤的影响及生物效应 ,仍有必要将土壤中石灰石的投加量提高到中和滴定量。更多还原

【Abstract】 This study uses CaCl 2-Ca(OH) 2 neutral titration combined with soil-limestone cultivation to select optimum adding dose of limestone in acid red soil. The result shows that the dose is half of titer. However ,because of the effect of heavy metal ion and biology in red soil, the optimum adding dose of limestone should be improved to the dose of neutral titration更多还原