CAJ | 학술논문

为明确贵州省典型植烟土壤的氮素矿化规律，以贵州省典型植烟土壤黄壤、石灰土、紫色土为研究对象，采用Stanford长期好气间歇淋洗培养法，研究了其土壤氮素矿化过程。结果表明，在好气性培养过程中，贵州省典型植烟土壤氮素矿化速率出现快速下降—缓慢下降—趋于稳定的变化过程，矿化速率表现为石灰土＞黄壤＞紫色土。土壤矿化氮累积量随着培养时间的推进而增加，矿化氮累积量表现为石灰土＞黄壤＞紫色土。矿化氮累积主要集中在培养的0~63 d，占总矿化氮累积量的78.42%~83.36%。土壤矿化氮量与土壤有机质含量存在显著或极显著的正相关关系，并能与培养时间通过多元回归的方法建立不同类型典型植烟土壤的矿化氮累积量预测模型。
위명학귀주성전형식연토양적담소광화규률，이귀주성전형식연토양황양、석회토、자색토위연구대상，채용Stanford장기호기간헐림세배양법，연구료기토양담소광화과정。결과표명，재호기성배양과정중，귀주성전형식연토양담소광화속솔출현쾌속하강—완만하강—추우은정적변화과정，광화속솔표현위석회토＞황양＞자색토。토양광화담루적량수착배양시간적추진이증가，광화담루적량표현위석회토＞황양＞자색토。광화담루적주요집중재배양적0~63 d，점총광화담루적량적78.42%~83.36%。토양광화담량여토양유궤질함량존재현저혹겁현저적정상관관계，병능여배양시간통과다원회귀적방법건립불동류형전형식연토양적광화담루적량예측모형。
In order to investigate the organic nitrogen mineralization of tobacco-growing soils, three typical tobacco-growing soils:Yellow soil, Calcareous soil and Purple soil were chosen to measure the nitrogen mineralization by using the Stanford aerobic incubation method. The results indicated that the soil mineralization rate showed a tendency to decrease significantly, decrease gently and tend to be stable under aerobic condition. The average mineralization rate was Calcareous soil>Yellow soil>Purple soil. The accumulation of the soil mineralizable N increased slowly with the incubation time under aerobic condition. The tendency of the accumulation of the mineralizable N was similar with that of the soil mineralization rate. The accumulation of the mineralizable N increased rapidly from 0 to 63 days, accounting for about 78.42%~83.36% of the total accumulation of the mineralizable N. The accumulation of the mineralizable N was positively correlated with soil organic matter content. Prediction models of the accumulation of the mineralizable N in different typical tobacco-growing soils were also constructed by using soil mineralizable N content, organic matter content, and incubation time.