Phase Changes of Soil Ph and Metal Availability Induced by Urea Application to Acidic Red Soils from South China

摘要：

　　Nitrogenous fertilizers are added to the soil to increase crop yields and quality,but may also affect other soil functions and processes as well.The effect of urea fertilizer on soil pH and metal availability,in relation to the dynamics of the chemical composition of red soil solutions,was evaluated using a laboratory experiment with different urea treatments.The results revealed that addition of urea fertilizer to acidic red soils caused drastic changes in soil pH during some stages of the experiment,and these pH changes depended on time courses and the N rate of urea application.

关键词： soils urea application pH metal availability

作者: Yang Yang Hou Hong Liao Bohan Zou Dongsheng Zhou Xihong Zeng Qingru

作者单位: Department of Ecological Science,Hunan Agricultural University,Changsha,China 410128 Institute of Soil Science,Chinese Academy of Environmental Protection,Beijing,China 100012

会议类型: 国际会议

会议名称: 3rd International Conference on Pollution Ecology(第三届污染生态学国际会议(3rd ICPE))

会议地点: 天津

会议语种:英文

页码: 79-80

在线出版日期: 2012-11-06（万方平台首次上网日期，不代表论文的发表时间）