摘要
利用室内土培试验研究了不同氮肥对潮土中磷肥转化的动态影响。结果表明,除硝酸铵,不同氮肥均显著降低土壤有效磷含量,其中以硝酸钙和尿素处理作用最显著;不同氮肥均显著降低土壤水溶性磷含量,但硝酸铵的作用显著小于其他氮肥;各氮肥处理在培养15 d时,土壤水溶性磷含量差异最显著,硝酸钙和尿素处理的土壤水溶性磷含量有小于氯化铵和硫酸铵处理的趋势,但随着时间延长,除硝酸铵外,各氮肥处理间差异不大。
The effect of different nitrogen fertilizers on dynamic transformation of phosphorus fertilizer in calcareous soil was studied in indoor incubation experiments. The results showed that except ammonium nitrate, all nitrogen fertilizers decreased soil available phosphorus content, especially calcium nitrate and urea; and that all nitrogen fertilizers de- creased soil water soluble phosphorus content, but the effect of ammonium nitrate was less than that of the others; and that difference in soil water soluble phosphorus among these different nitrogen fertilizers was biggest great on the fifteenth incubation day, with calcium nitrate and urea was less than that of ammnonium chloride and ammonium sulphate. But with time going on except ammonium nitrate, the difference became little.
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2006年第5期39-42,共4页
Soil and Fertilizer Sciences in China
关键词
氮肥
磷肥
转化
潮土
nitrogen fertilizers
phosphorus fertilizers
dynamic transformation
calcareous soil
