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1987～1988年采用淹水密闭培养一间歇淋洗方法研究了湖南省的水稻土土属——红黄泥的土壤氮矿化特性。结果表明:采用淹水密闭培养一间歇淋洗法得到的土壤矿化氮量与相同有效积温条件下的田间土壤矿化氮量基本一致。采用该法进行稻田土壤氮矿化的研究是可行的。淋洗液以0.02NKCl100ml+无氮营养液25ml为好。湖南省红黄泥土壤氮矿化过程可用双曲线方程,一级反应动力学方程和有效积温经验式模拟。三种方程均达0.01显著水准。红黄泥土壤氮矿化势No为56～104ppm N。氮矿化速率常数k为0.24～0.28。不同土壤氮矿化量的差异主要由No不同引起,与k关系不大。在影响土壤矿化氮量的几种主要理化性状中。碱解氮对矿化氮量的贡献最大。
From 1987 to 1988, a batch leaching method was used to study the nitrogen mineralization characteristics of paddy soils - reddish clayey soils in Hunan Province. The results showed that the amount of mineralized N in soil under a submerged airtight incubation was basically the same as that of the soil under the same effective accumulated temperature. It is feasible to use this method to study the nitrogen mineralization in paddy soil. Eluent to 0.02NKCl100ml + 25ml nitrogen-free nutrient solution is better. The process of nitrogen mineralization of reddish soil in Hunan Province can be simulated by hyperbolic equation, first-order kinetic equation and effective accumulated temperature. All three equations reached 0.01 significant level. Nitrogen mineralization potential of reddish soil is 56 ~ 104ppm N. Nitrogen mineralization rate constant k is 0.24 ~ 0.28. The differences of mineralization amount of nitrogen in different soils were mainly caused by different No, but not with k. Among the several major physico-chemical traits affecting soil mineralized nitrogen. Alkaline nitrogen contributes most to the amount of mineralized nitrogen.