固磷基质(无定形铁)淋失特征及其与磷素淋失的关系  

Soil amorphous iron leaching and its relation with phosphorus leaching.

作　　者：王道涵[1] 孙铁珩[1] 何娜[2] 杜立宇[2] 梁成华[2] 

机构地区：[1]中国科学院沈阳应用生态研究所 [2]沈阳农业大学土地与环境学院,沈阳110161

出　　处：《生态学杂志》2005年第12期1384-1387,共4页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(30370972);沈阳大学环境工程重点实验室开放基金资助项目

摘　　要：采用淋洗试验研究了水田土壤固磷基质(无定形铁)淋失特征及其与磷素淋失的关系。结果表明,添加柠檬酸和葡萄糖培养处理对无定形铁、络合态铁的淋失具有极显著效应,水分和温度等因素对无定形铁和络合态铁的淋失交互效应显著;相关分析表明,固磷基质(无定形铁)淋失与磷素淋失的相关关系显著,说明对磷素淋失有一定的影响。Soil amorphous iron is a medium of phosphorous fixation. With washing experiment, this paper studied the characteristics of soil amorphous iron leaching in paddy soils and its relation with phosphorus leaching. The results showed that adding citric acid and glucose had a significant effect on the leaching of soil amorphous and complex iron. A significant interaction was observed between soil moisture and temperature on the leaching of soil amorphous and complex iron. There was a close correlation between the leaching of soil amorphous iron and phosphorus.

关 键 词：固磷基质 无定形铁 磷素淋失 磷迁移 

分 类 号：S153[农业科学—土壤学]