用室内模拟淋洗土柱的方法，对棕壤和褐土的酸淋容特征进行了研究。

The characteristics of acid leaching of brown soil and cinnamon soil were studied using an indoor soil column leaching method with simulated acid rain.

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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.

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利用原状回填土渗漏池研究了油菜生长季节氮素在紫色土中的移动特点和淋洗损失以及影响氮素移动和淋失的因素。

We studied transference properties and leaching loss of nitrogen in purple soils during the growth period of wheat with percolation pond. Also the factors affecting them are researched.

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