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采用土柱和变温培养方法研究黑麦有机Ｎ在土壤中的矿化及淋洗。结果表明，培养八周后约７１％的有机Ｎ被矿化。有机Ｎ矿化明显受温度影响，培养温度由低到高（０～＞４～＞１０～＞２０℃）的处理比由高到低（２０～＞１０～＞４～＞０℃）的处理更利于矿化Ｎ在土壤中积累。淋洗试验的水分平衡及Ｎ的淋洗也受温度影响。约３７％的水分在试验过程中因蒸发而损失掉，且温度越高；损失量越大。ＮＨ_４－Ｎ与ＭＯ_３－Ｎ的行为不同，ＭＯ_３－Ｎ在土壤剖面中易移动，而ＭＨ_４－Ｎ移动缓慢，淋洗液中的Ｎ组分主要是ＭＯ_３－Ｎ。培养温度由低到高（０～＞４～＞１０～＞２０℃）的处理，其矿化Ｎ的淋洗浓度及淋失量均比温度由高到低（２０～＞１０～＞４～＞０℃）的处理为高。培养八周后，约７．７％～１７．５％的Ｎ从土柱淋失。ＮＯ_３－Ｎ的移动相对滞后于水的移动，Ｎ的淋洗过程中存在着弥散现象。
Soil mineralization and rinsing of organic ryegrasses in soil were studied by soil column and temperature - swing culture method. The results showed that about 71% of organic N was mineralized after eight weeks of cultivation. Organic N mineralization was obviously affected by temperature. The treatment temperature from low to high (0 ~> 4 ~> 10 ~> 20 ℃) was higher than that from high to low (20 ~> 10 ~> 4 ~> 0 ℃) More conducive to mineralization N accumulation in the soil. The water balance of the rinse test and the rinse of N are also affected by temperature. About 37% of the water lost by evaporation during the test, and the higher the temperature; the greater the loss. The behavior of NH_4-N and MO_3-N is different. MO_3-N is easy to move in the soil profile, while MH_4-N moves slowly. The content of N in the eluent is mainly MO_3-N. The results showed that the leaching concentration and the leaching loss of mineralized N were both higher than those of high temperature (20 ~> 10 ~> 4 ℃) when the incubation temperature was from low to high (0 ~> 4 ~> 10 ~> 20 ℃) > 0 ° C) is high. After eight weeks of cultivation, about 7.7% to 17.5% of N was leached from the soil column. The movement of NO_3-N lags behind the movement of water, and there is dispersion in the leaching process of N.