MO Zhixin,DU Haiyan,LIU Caiting,et al.In Situ Simulated Nitrogen Deposition on the Impact of Salinization of Soil Nitrogen Mineralization[J].Northern Horticulture,2016,40(23):167-170.[doi:10.11937/bfyy.201623039]
原位模拟氮沉降对盐渍化土壤氮素矿化的影响
- Title:
- In Situ Simulated Nitrogen Deposition on the Impact of Salinization of Soil Nitrogen Mineralization
- 文献标志码:
- A
- 摘要:
- 以喀什地区疏附县尔库萨克乡盐渍化土壤为试材，采用原位模拟方法，研究了不同氮素沉降水平对土壤氮素矿化的影响。结果表明：氮素的沉降量达到1.0 g?m-2?a-1时，是土壤铵态氮含量的最佳阈值；氮素的氨化率达到0.5 g?m-2?a-1时，是土壤氨化率的最佳阈值；当氮素的沉降量达到3.0 g?m-2?a-1时为土壤硝化及矿化的最佳阈值。盐渍化土壤铵态氮含量及土壤氮素氨化率均是在20～40 cm土层达到最大值，而硝态氮含量、硝化率、矿质氮含量、矿化率均是在表层（0～20 cm）达到最大值，由此说明，土壤表层（0～20 cm）矿化及硝化作用更快。
- Abstract:
- Shufu county in Kashgar，Cusack salinized soil was used as materials by in-situ method，different nitrogen deposition effects on soil nitrogen mineralization was studied.The results showed that the settlement of nitrogen amount reached 1.0 g?m-2?a-1 was the best threshold value of soil ammonium nitrogen content；N of ammonification rate of 0.5 g?m-2?a-1 was the best threshold value of soil ammonifying rate；the settlement of nitrogen amount reached 3 g?m-2?a-1 was the best threshold value of soil nitrification and mineralization.Salinization of soil ammonium nitrogen content and soil nitrogen ammonification rate was in reach maximum 20-40 cm soil layer，and nitrate content，nitrification rate and mineral nitrogen content，mineralization rate were all in the surface layer reach maximum (0-20 cm)，it indicated that the soil surface (0-20 cm) mineralization and nitrification faster.
参考文献/References:
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备注/Memo
第一作者简介：莫治新(1978-)，女，安徽六安人，硕士，副教授，现主要从事土壤与环境方面的教学与科研工作。E-mail:mzxzky@163.com. 基金项目：国家自然科学基金资助项目(41161037)；国家级大学生创新资助项目（201510763024）；喀什大学重点课程建设资助项目（KSA2014011）。