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用培养试验研究了贵州昆阳磷矿粉（ＧＰＲ）、湖南黄荆坪磷矿粉（ＨＰＲ）和湖北荆襄磷矿粉（ＪＰＲ）与酸性土壤混合培养后，对小麦幼苗根生长和土壤化学性质的影响。结果表明：（１）三种磷矿粉与供试土壤混合培养后，均可使土壤上生长４天的麦苗根长度增加，与对照土壤上麦苗根长相比，统计结果相差极显著。（２）土壤经磷矿粉处理后，ＰＨ值增高，易溶性钙（用０．０１５ｍｏｌ／ＬＫＣＩ提取）和交换性钙含量增加，易溶性铝含量降低，表明施用磷矿粉有供钙、缓解铝毒和促进小麦幼苗根系生长的作用。（３）测定了不同处理土壤的溶液离子组成，初步探讨了磷矿粉缓解铝毒的原因。这些结果为我国中、低品位磷矿粉的直接施用提供了依据。
The effects of GPR, HPR and JPR in Hubei province on the root growth and soil chemical properties of wheat seedlings were studied by culture experiments. influences. The results showed that: (1) After the three kinds of phosphate rock were mixed with the test soil, the length of the wheat seedling root on the soil increased 4 days, which was significantly different from the root length of the wheat seedling on the control soil. (2) After the phosphate rock treatment, the PH value increased, soluble calcium (extracted with 0.015 mol / L KCI) and exchangeable calcium content increased, and the soluble aluminum content decreased. Aluminum Toxicity and Promotion of Root Growth in Wheat Seedlings. (3) Determination of the solution ion composition of different treatment soils, to explore the reason of phosphate rock to alleviate aluminum toxicity. These results provide the basis for the direct application of low-grade phosphate rock in our country.