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为了研究不同种类缓控释氮肥在高羊茅草坪土壤中硝态氮的运移,通过渗滤池和小区相结合的方法,研究筛选适合高羊茅草坪的环境友好的新型肥料。结果表面:不同种类的缓控释氮肥处理比尿素处理均能减少土壤硝态氮含量和淋溶量。而且在0～90cm土层中,PCU60处理比PCU30和IU处理减少硝态氮含量及降低淋溶效果更明显。综上所述,缓控释氮肥可有效降低硝态氮在土壤中的含量及淋失,是一种环境效益突出、应用前景广泛的新型肥料。
In order to study the nitrate-N transport in different types of controlled-release nitrogen fertilizers in the soil of tall fescue turfgrass, a new environment-friendly fertilizer suitable for tall fescue turfgrass was screened through a combination of infiltration ponds and plots. Results Surfaces: Different types of controlled-release N fertilizers could reduce soil NO3-N and leaching compared with urea treatment. In the 0 ~ 90cm soil layer, the treatment of PCU60 was more obvious than that of PCU30 and IU in reducing nitrate content and leaching. In summary, the slow-controlled release of nitrogen fertilizer can effectively reduce the nitrate content in the soil and leaching, is a prominent environmental benefits, the application of a wide range of new fertilizer.