loss rate of nitrogen fertilizer 单位氮肥N2O损失率
The leaching process and nitrogen forms, and the effects of application rate and the depth of soils on nitrogen loss by leaching were also discussed in this paper.
还探讨了氮肥淋溶过程中的氮形态变化，以及施氮量和土层深度对氮肥淋浴损失的影响。
The practical rate of gain and loss of nitrogen, phosphorus and potassium were all in the permit range, this indicated that exploit of nitrogen, phosphorus and potassium are rather reasonable.
氮磷钾的实际盈亏率均在允许盈亏范围内，说明氮磷钾养分利用情况比较合理。
Biological tests show that both fertilizers are helpful to improve lawn quality, reduce nitrate nitrogen leaching loss and raise fertilizers utilization rate.
生物试验表明：两种肥料有利于草坪质量的提高，减少土壤中硝态氮的淋失，提高肥料的利用率。
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