摘要
经过6a长期不同施肥定位试验,使同一土壤形成肥力上的差异,对此土壤进行室内氨挥发模拟试验。研究结果表明,施用等量尿素条件下,不同施肥土壤氨挥发损失具有明显差异,长期施N土壤,可缩短氨挥发时间3～4d,并且可明显降低挥发损失量。长期施用P肥土壤也能降低氨挥发损失量。并且氨挥发损失量与土壤有机质含量显著相关。
Different position fertilizations were carried out for six years to make the fertility of the same soil differentiae and the soil with differentiated fertilities was used in simulating NH_3 volatilization in laboratory. The results of the simulation revealed that the NH_3 volatilizations from the soil with urea at the same rate by significantly differed, and the long-term nitrogen fertilization could reduce the period of NH_3 volatilization by 3~4 days as well as obviously reduce the NH_3 volatilization. The long-term phosphorus fertilization also could reduce the NH_3 volatilization, and NH_3 volatilization significantly related to soil organic matter.
出处
《干旱地区农业研究》
CSCD
北大核心
2005年第2期76-79,共4页
Agricultural Research in the Arid Areas
基金
中国科学院知识创新工程项目(KZCX2-413-3)
