不同复垦模式下改进后的Hedley磷分级的研究

A Research of Improved Hedley Phosphate Fractionation in Different Reclamation Mode

磷是植物生长发育的必需营养元素之一.植物在生长过程中所利用的磷素主要来自土壤.在不同的复垦模式下,土壤中磷的利用效率有所不同.本文采用改进后的Hedley磷分级方法,把矿区复垦土壤中的磷分为5种形态.在研究了不同复垦模式下矿区复垦土壤中的全磷的含量的基础上,为矿区土地复垦效果的评价提供一个更为有效的判断方法.研究结果表明,土壤中各形态的磷主要以盐酸态和残留态为主;复垦模式为沙枣×刺槐×柠条的土壤经过7年复垦后与复垦模式为云杉×油松×落叶松的土壤经过13年复垦后,全磷的含量最高,表明这两种复垦模式对土壤具有较好的改良效果.

Phosphorus is a necessary nutrient for plant growth.The plant absorbs the phosphorus which is mainly in soil during growth.In different reclamation modes,phosphorus in soil has different efficiency.The paper applies the method of improved Hedley phosphate fractionation and classifies five types for mine soil.The different reclamation mode mining area of the soil reclamation can provide a more effective judge method for the content of total phosphorus for land reclamation effect evaluation.he research results showed that the content of HCI-P and Residual-P are higher; The highest content of total phosphorus is about reclamation mode to locust × Angustifolia × amorpha soil after reclaiming seven years and spruce × pinus × tabulaeformis larch soil after reclaiming thirteen years.Which show that these two reclamation modes have good improved effect for soil.