Substitution of Chemical Fertilizer with Organic Fertilizer Affects Soil Total Nitrogen and Its Fractions in Northern China

文献类型： 外文期刊

第一作者： Hossain, Md Elias

作者： Hossain, Md Elias;Mei, Xurong;Dong, Wenyi;Yan, Zhenxing;Liu, Xiu;Liu, Enke;Hossain, Md Elias;Mei, Xurong;Dong, Wenyi;Yan, Zhenxing;Liu, Xiu;Liu, Enke;Hossain, Md Elias;Mei, Xurong;Zhang, Wenying;Rachit, Saxena;Gopalakrishnan, Subramaniam

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关键词： organic manure; nitrogen fertilizer; soil total N; labile organic N; mineral N; soil fertility

期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH （ 影响因子：4.614； 五年影响因子：4.798 ）

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年卷期： 2021 年 18 卷 23 期

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收录情况： SCI

摘要： The impact of chemical to organic fertilizer substitution on soil labile organic and stabilized N pools under intensive farming systems is unclear. Therefore, we analyzed the distribution of soil total N (STN), particulate organic N (PON), microbial biomass N (MBN), dissolved organic N (DON), and mineral N (NO3- and NH4+) levels down to 100 cm profile under wheat-maize rotation system in northern China. The experiment was established with four 270 kg ha(-1) N equivalent fertilizer treatments: Organic manure (OM); Organic manure with nitrogen fertilizer (OM + NF); Nitrogen fertilizer (NF); and Control (CK). Results found that the OM and OM + NF treatments had significantly higher STN, PON, MBN, DON, and NO3- contents in 0-20 cm topsoil depths. Conversely, the NF treatment resulted in the highest (p < 0.01) DON and NO3- depositions in 40-100 cm subsoil depths. The NH4+ contents in selected profile depths were significantly highest (p < 0.01) under OM treatment. The correlations between STN and its fractions were positively significant at 0-10 and 10-20 cm topsoil depths. Our results suggest that partial substitution of chemical fertilizer with organic manure could be a sustainable option for soil N management of intensive farming systems.

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