Effects of Low pH on Uptake Rate of Inorganic Nitrogen by Different Plant Seedlings

摘要：

Most experimental plants absorbed NO3- -N faster at pH 4.0 than at pH 6.0 and absorbed NH4+-N slower, but few experimental plants showed different tendency. The exceptions of NO3- uptake were probably due to excessive nitrate outflow of some maize and wheat varieties ( Suyu 19, Zhendan 958 and Yangmai12) at low pH. Some other experimental plants ( Huaidao 8, Nongda108 and Yangmai12) even showed no obvious NH4+ toxic symptoms at pH 4.0. The effects of low pH on uptake rate of NH4+ -N and NO3- -N varied with plant species, varieties, and the difference increased with the age of the seedlings.

作者: Xiaoli Wang Yuhua Shan Pin Chen Ke Feng

作者单位: College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225009, China

会议类型: 国际会议

会议名称: The 7th International Symposium on Plant-Soil Interactions at Low pH(第七届低pH条件下植物-土壤交互作用国际研讨会)

会议地点: 广州

会议语种:英文

页码: 120-121

在线出版日期: 2009-05-17（万方平台首次上网日期，不代表论文的发表时间）