期刊论文

Effects of Applications of Percarbamide on Short-term Changes of Soils pH and Active Al in Six Soils in Southern China

中文

闽南师范大学学报(自然科学版)

2095-7122

2008

21

2

74-77

10.3969/j.issn.1008-7826.2008.02.016

福建省教育厅科技项目（JA07157）； 漳州师范学院硕士研究生学历教师科研启动基金项目（L206I3（2003））；

本校为其他机构

为了研究施用过碳酰胺后中国南方6个酸性土壤pH值及活性Al的短期变化,进行了实验室模拟土培试验. 结果表明:对6种酸性土壤施用不同浓度过碳酰胺,其pH值在短期内都随着施入过碳酰胺浓度的增大而急剧上升,交换性铝含量随着施用过碳酰胺浓度的增大而急剧下降;施用过碳酰胺后,土壤pH值上升的现象是短期的,pH值达到最大值后缓慢下降,而土壤中铝元素的有效性与土壤pH的变化趋势呈显著负相关;短期内,经过碳酰胺处理的玉米幼苗主根明显缩短,侧根生长受到抑制,并且其玉米铝毒明显重于不经过碳酰胺处理的玉米,被玉米吸收的铝主要分布在玉米的地下部分,只有较少的铝被转移到地上部分.

Percarbamide is an important chemical product and a new fertilizer. It is widely used in foreign, but just beginning in China. Effects of applications of Percarbamide on short-term changes of Soils pH and active Al in six soils in southern China were studied with method of laboratory simulated soil cultivate tests. The results indicated that ： at 25℃, the changes of pH in acidic soils increased quickly, but soil exchangeable Al decreased, with the increasing concentrations of applied Percarbamide; The increase of soil pH was short-term, with ...