摘要
过碳酰胺是一种新型精细化工品,也是一种新型氮肥,在国外已得到广泛的应用和开发,而我国对其开发和应用刚刚起步。试验研究了3种酸性土壤和3种碱性土壤施入过碳酰胺(和尿素对照)后的氨挥发特性。结果表明,过碳酰胺和尿素在供试6种土壤上的氨挥发强度具有相同的规律,都是先从小到大出现峰值,然后又降低;3种酸性土壤氨挥发高峰期约在第7 d左右,3种碱性土壤的氨挥发高峰期约在第3 d左右。土壤氨挥发含量的变化与pH变化同步。在最初挥发高峰期阶段,过碳酰胺的氨挥发强度在6种土壤上都大于尿素,但在供试的3种酸性土壤上,过碳酰胺的氨挥发总量均略小于尿素,而在供试的3种碱性土壤上,却正好相反。
Percarbamide is an important chemical product and a new fertilizer, widely using in foreign, but just beginning in china. Characteristic of ammonia volatilization of urea peroxide and urea in 3 acidic soils and 3 alkali soils were studied. The results indicated that ammonia volatilization intensity have the same tendency between urea peroxide and urea, and they followed the changes of soil pH： rose to maximum, and then fell in 6 soils with different maximum and different time. The maximum of ammonia volatilization intensity in 3 acidic soils and 3 alkali soils was the seventh day and the third day respectively; the initial ammonia volatilization intensity from urea peroxide was higher than that from urea in 6 softs, while the total ammonia volatilization quantity of urea peroxide were little smaller than urea in 3 acidic soils, and were little higher than urea in 3 alkali soils.
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2007年第1期27-29,50,共4页
Soil and Fertilizer Sciences in China
基金
国家自然科学基金项目(40271110)
湖南农业大学创新科技基金(04PT02)资助
