采用模拟灌溉和模拟降雨方法,研究不同控释氮比例的控释氮掺混肥在原状土柱土壤中养分的淋失特征。研究结果表明,控释氮掺混肥显著降低了土壤中铵态氮、硝态氮的淋失,增强了土壤pH值缓冲性,提高了后期土壤溶液电导率;控释氮占59%的控释掺混肥具有“前控后保”的特点,适于推广应用。 Simulated irrigation and simulated rainfall were used to study the leaching characteristics of nutrients in soil with undisturbed soil with controlled-release nitrogen and different proportions of controlled release nitrogen. The results showed that the controlled release nitrogen fertilizer significantly reduced leaching of ammonium and nitrate nitrogen in the soil, enhanced soil pH buffering and increased conductivity of later soil solution. Controlled release nitrogen accounted for 59% of the control Blending fertilizer with “before the control after Paul ” characteristics, suitable for promotion and application.