Ammonia volatilization characteristics and nitrogen transformation of six kinds of high-nitrogen compound fertilizer on different soils were researched by indoor constant temperature cultivating method.The results showed that ammonia volatilization rate and accumulation amount had significant positive correlation with soil pH value,and displayed chernozem ＞black soil ＞albic soils,ammonia volatilization of different fertilizers was various,controlled-released fertilizer,stability fertilizer and coated compound fertilizer could delay peak of ammonia volatilization rate 2 days compared to bulk-blending fertilizer,high-tower fertilizer,urea-formaldehyde fertilizer and stability fertilizer could decrease ammonia volatilization accumulation by 5.3％～ 56.9％.Nitrification capacity of soil displayed chernozem ＞ albic soils ＞ black soil,which was related with soil pH and soil texture,ammonia nitrogen content of soil firstly increased rapidly after different fertilizers applied into soil,then decreased slowly after about 7 days with peak arriving,lastly graduated stability after 40 days.But nitrite nitrogen content of soil kept rising.In 3 kinds of soils,stability fertilizer could decrease soil nitrification rate obviously.
new type fertilizerammonia volatilizationnitrogen transformationnitrification
国家科技期刊平台
NSTL
万方数据
维普
