期刊论文

中文

水土保持学报

1009-2242

2009

23

1

68-72

10.3321/j.issn:1009-2242.2009.01.015

国家自然科学基金项目（30770389）；

本校为第一机构

采用实验室人工气候箱培养的方法,研究了两种硝化抑制剂双氰胺和硫代硫酸钾在两种碱性土壤中对土壤pH值变化、氨挥发特性及铵态氮转化的影响.实验结果表明,各处理在两种碱性土壤中的pH值都是先上升到一个峰值,然后下降,且速率先快后慢.硫代硫酸钾处理和对照处理的pH值约在实验第4天出现峰值,双氰胺处理pH值出现峰值的时间较硫代硫酸钾处理及对照处理土壤推迟了3天左右.整个实验期间,双氰胺处理的pH值一直处于较高水平,硫代硫酸钾处理的次之,对照处理的最小.氨挥发强度与土壤pH值同步,各处理氨的挥发量一般在第7天达到最大值,此时双氰胺处理氨的挥发量最大,硫代硫酸钾处理的次之,对照处理的最少....

Incubation studies on the effect of two nitrification inhibitors（IN） dicyandiamide and potassium thiosulfate on pH value＇s change, ammonia volatilization and ammoniacal nitrogen transformation of garden soils in the suburbs of Jincheng and Beijing show that in these two alkaline soils, the soil＇s pH in all treatments increased to maximum quickly at the beginning and then decreased at a slow rate. The peak of soil＇s pH appeared at the 4 th day of the experiment in potassium thiosulfate treatments and no-NI control, while it was postponed ab...