文献类型： 外文期刊

作者： Xu, Lingying ¹ ; Yu, Quanbo ¹ ; Wang, Meiyan ¹ ; Yang, Jizhou ³ ; Xu, Shengxiang ¹ ; Shi, Xuezheng ¹ ; Xie, Xinqiao ¹ ; Zhao, Xu ¹ ; Gao, Jichao ⁴ ; Zhang, Yanyu ⁵ ;

作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Changshu Natl Agroecosyst Observat & Res Stn, Nanjing 210008, Peoples R China

2.Shanghai Acad Landscape Architecture Sci & Planni, Shanghai Engn Res Ctr Landscapingon Challenging U, Shanghai, Peoples R China

3.Hongta Tobacco Grp Co Ltd, Yuxi, Yunnan, Peoples R China

4.Jilin Acad Agr Sci, Natl Long Term Locat Monitoring Base Black Soil F, Jilin, Jilin, Peoples R China

5.Lincoln Univ, Fac Agr & Life Sci, Dept Wine Food & Mol Biosci, Christchurch, New Zealand

关键词： new amendment; porous clay ceramic; structure degraded soils; X-ray CT analysis; soil N mineralization

期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：4.125； 五年影响因子：4.096 ）

ISSN： 0022-5142

年卷期：

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收录情况： SCI

摘要： BACKGROUND The availability of soil nitrogen (N) decreases as the structure of agricultural soils degrades. Traditional methods focus on organic amendments that indirectly affect the porosity and N content of soil. Due to the low efficiency of such amendments, new materials, particularly highly porous materials, are needed to improve the quality of soil, which has opened new directions. RESULTS The addition of 2 to 7 mm of porous clay ceramic (PLC) significantly increased the fresh weight of Brassica chinensis. The soil aeration porosity (>50 mu m) increased by 0.69% on average in response to 1% PLC application. Soil NO3--N, NH4+-N and mineral N increased by 3.3, 1.3 and 4.6 mg kg(-1) on average, respectively, following a 1% PLC application rate. The initial N content of the high PLC treatments was the lowest in the incubation experiment. The parameters of soil N mineralization, i.e. potentially mineralizable N (N-0), the first-order rate constant (k) and the mineralization composite index (N-0 x k), increased obviously as the amount of PLC increased. Porosities larger than 1000 mu m were significantly more positively correlated with the parameters of soil N mineralization than those <500 mu m. The Pearson correlation coefficients suggested that high porosity, mineral N and N-0 values had significant positive relationships with the fresh weights in double seasons. CONCLUSION The application of PLC increased soil aeration and enhanced the availability of soil N, which yielded large vegetable harvests in clayey soils in the short term. (c) 2022 Society of Chemical Industry.