植物营养与肥料学报2011，Vol.17Issue(5)：1172-1178,7.
模拟酸雨对赤红壤磷素及Ca^2＋、Al^3＋、Fe^2＋淋失特征的影响
Effects of simulated acid rain on leaching of phosphorus, Ca^2＋,Al^3＋ and Fe^2＋ from lateritic red soils
摘要
Abstract
A soil column method was applied to study influences of simulated acid rain （SAR） on leaching characteristics of dissolved phosphorus （DP） , Ca^2＋,Al^3＋ and Fe^2＋ in lateritic red soils in south China. The results revealed that compared to the control, the change of leaching pH was not so obvious （ P 〉 0.05 ）, but large amounts of leaching losses of Ca^2＋,Al^3＋ and Fe^2＋ were caused by SAR, and the amounts of Ca^2＋,Al^3＋ and Fe^2＋ were all increased with the decrease of SAR pH. The amounts of Al^3＋ and Fe^2＋ were increased dramatically when the pH of SAR is 2.0. While as the time elapsed, the amount of leaching phosphorus was increased at first and then decreased slowly, and the total amount of leaching phosphorus also had the same trend when the pH of SAR was decreased. The amount of water soluble P leaching was increased when pH was larger than 4. 0 and was decreased when pH was less than 4.0. The results of correlation analysis showed that the amounts of Al^3＋ and Fe^2＋ had dramatically negative correlation with the leaching phosphorus（ r1 =-0. 6531 ,r2 =-0. 5107）. The more the acid rain released active iron and aluminum, the more active phosphorus adsorption and fixation of soils.关键词
酸雨/赤红壤/磷素/Ca^2＋/Al^3＋/Fe^2＋Key words
acid rain/lateritic red soils/phosphorus/Ca^2＋/Al^3＋/Fe^2＋分类
农业科技引用本文复制引用
徐华勤,章家恩,余家瑜,谢俊芳,毛丹鹃,杨滔..模拟酸雨对赤红壤磷素及Ca^2＋、Al^3＋、Fe^2＋淋失特征的影响[J].植物营养与肥料学报,2011,17(5):1172-1178,7.基金项目
国家自然科学基金 （）
“十一五”国家科技支撑计划项目第七课题 （）
广东省自然科学基金 （）
中国博士后特别资助项目（20100355）资助. （）
