采用室内模拟氨挥发和模拟降雨土柱淋洗方法，研究了NDSA（饱和铵贮库）施肥法对降低氨挥发和氮素淋失的作用。
The effects of a new fertilization method-NDSA(nitrogen depot with saturated ammonium) on the loss of nitrogen from ammonia volatilization and N leaching were studied by imitation experiments.
采用在实验室培养和用淋洗管模拟田间淋洗的方法研究聚丙烯酰胺对沙土水稳性团粒结构改良作用，对氮、磷、钾养分保肥的作用以及其合理施用量。
This paper study on the effects of PAM on improving water stable aggregate and reducing nutrients loss from sandy soil, methods of Laboratory incubation and leaching were adopted.
而三唑类抗真菌剂的解吸附作用就显示了滞后现象，在单次淋洗之后，仍保留有30 - 60%的此类抗真菌剂。
Otherwise, desorption of triazole fungicides showed hysteresis, and 30-60% of the triazole fungicides were retained by the soil after single washing.
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