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在多年生黑麦草草坪施用速效与缓效氮肥后 ,对氨的挥发损失进行田间定位测定。结果表明 ,占施入量 0 .77%～ 2 0 .7%的氮以 NH3的形式挥发。氮肥种类不同 ,挥发动态各异 ,损失量之间差异显著。在供试的 5种氮肥中 ,氮素损失率的顺序为 :普通尿素 >塑膜包衣尿素 >国产草坪专用肥 >IBDU草坪肥 >日本包膜缓释肥。缓效性能越好 ,氨的挥发损失越少 ,缓释氮肥不但显著降低氨的挥发 ,而且能持久高效地保持草坪质量
After perennial ryegrass turfgrass was applied with quick-acting and slow-acting nitrogen fertilizer, the volatilization of ammonia was measured in the field. The results showed that 0.77% ~ 20.7% of the total amount of nitrogen volatilized in the form of NH3. Different types of nitrogen fertilizers, volatile different, the difference between the significant loss. In the five nitrogen fertilizers tested, the order of nitrogen loss was: Normal urea> Plastic coated urea> Domestic lawn fertilizer> IBDU Lawn fertilizer> Japanese slow-release coated fertilizer. The better the slow-acting property is, the less the ammonia volatilizes. The slow-release nitrogen fertilizer can not only significantly reduce the volatilization of ammonia, but also maintain the quality of the lawn effectively