高效利用土壤磷素的植物营养学研究

STUDIES ON PLANT NUTRITION OF EFFICIENT UTILITY FOR SOIL PHOSPHORUS

论述磷在农业及生态系统中的重要地位、磷资源的危机以及磷肥在土壤中的理化特性，探讨土壤的供磷潜力，不同植物品种以及相同品种不同基因型对土壤潜在磷资源的吸收利用差异、营养机制、遗传特性及其利用不同作物的基因型来活化、吸收利用土壤难溶态磷的可行性对策，从而为充分发挥植物自身潜力，提高土壤难溶态磷的生物有效性，高效利用土壤潜在磷资源，加快土壤磷素有效循环，节省资源、保护环境，真正达到生态系统的稳定与现代化农业的持续发展提供理论依据及实用性建议。

The important roles,resource value and properties of phosphorus in agriculture and ecological system were reviewed.Phosphorus supply potential in the soil,differences of absorption,utilization,mechanisms,genetic characteristics and some possible strategies by using various crops or genotypes to mobilize and utilize hardly soluble phosphorus of soils were discussed.It was appraised on some theoretical and practical basis to improve bioavailability of soil hardly soluble phosphorus,efficiently utilize it by plant self potential,improve its cycle,and protect the environment,the approach will promote the sustainable advances of modern agriculture and stability of ecological systems.