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[目的]研究不同各类缓控释氮肥在高关茅草坪土壤中硝态氮的转移。[方法]通过渗滤池和小区试验,研究了不同种类缓控释氮肥在高羊茅草坪土壤中硝态氮的运移规律。[结果]不同种类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,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。[结论]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。
[Objective] The study aimed to study the nitrate-N transfer in different Kind of lawn-controlled turf soils with different types of controlled-release nitrogen fertilizers. [Method] The infiltration regularity of nitrate nitrogen in the soil of tall fescue turfgrass was studied by percolation filter and plot experiment. [Result] Different types of controlled-release nitrogen fertilizer could reduce nitrate nitrogen content and leaching amount in soil than urea treatment. In 0 ~ 90cm soil layer, PCU60 treatment reduced the content of nitrate nitrogen and decreased the content of nitrate nitrogen Solubility effect is more obvious. [Conclusion] The controlled-release nitrogen fertilizer can effectively reduce the content and leaching of nitrate nitrogen in the soil, which is a new type of fertilizer with prominent environmental benefits and broad application prospects.