中国岩溶2016，Vol.35Issue(2)：211-217,7.DOI:10.11932/karst20160211
钙、铁、铝形态对岩溶石灰土磷有效性的影响
Effects of calcium,iron and aluminum fractions on the phosphorus bioavailability in limestone soil of karst region
梁建宏 1曹建华 2杨慧 3黄芬4
作者信息
- 1. 中国科学院成都山地灾害与环境研究所/山地表生过程与生态调控重点实验室，四川 成都 610041
- 2. 中国地质科学院岩溶地质研究所/国土资源部、广西壮族自治区岩溶动力学重点实验室/岩溶生态系统与石漠化治理重点实验室，广西 桂林 541004
- 3. 中国科学院大学，北京 100049
- 4. 中国地质科学院岩溶地质研究所/国土资源部、广西壮族自治区岩溶动力学重点实验室/岩溶生态系统与石漠化治理重点实验室，广西 桂林 541004
- 折叠
摘要
Abstract
In this paper,the effective relationships between phosphorus (P)in the soil of the karst region and the fractions of calcium,iron and aluminum have been studied to provide theoretical basis for stabiliza-tion of karst bio-system and lime soil fertility.The fractions of mineral elements in limestone soil at different stages of development were detected by improved BCR sequence extraction method and the relationship be-tween total phosphorus and available phosphorus was analyzed.The results revealed that the concentration of total soil phosphorus and readily available phosphorus decreased with the development of limestone soil. The concentration of total P decreased to 76.7% and readily bioavailable P decreased to 84.7%.The positive corrections occurred between total and readily bioavailable P with the acid extractable,reducible and residual fractions of calcium,oxidable iron and aluminum,reducible aluminum.Total iron,aluminum and residual a-luminum had negative corrections with total and readily bioavailable P.The absolute correlation coefficients were higher than 0.9.With the development of limestone soil,the lack of total P and readily bioavailable P was more and more prominent for the limestone soil quality and fertility.关键词
石灰土/土壤有效磷/BCR 形态提取/元素形态Key words
limestone soil/readily bioavailable phosphorus/BCR sequence extraction/element fractions分类
农业科技引用本文复制引用
梁建宏,曹建华,杨慧,黄芬..钙、铁、铝形态对岩溶石灰土磷有效性的影响[J].中国岩溶,2016,35(2):211-217,7.
