【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。更多还原

【Abstract】 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.更多还原