文献类型： 外文期刊

作者： Wang, Jun ¹ ; Zhang, Lu ¹ ; Liu, Kailou ² ; Zhou, Boku ³ ; Gao, Hongjun ⁴ ; Han, Xiaori ⁵ ; Liu, Shutang ⁶ ; Huang, Shaomin ⁷ ; Zhang, Aijun ⁸ ; Hua, Keke ⁹ ; Wang, Jidong ¹⁰ ; Hu, Hangwei ¹¹ ; Xu, Minggang ¹ ; Zhang, Wenju ¹ ;

作者机构： 1.Chinese Acad Agr Sci CAAS, Key Lab Arable Land Qual Monitoring & Evaluat Mini, Inst Agr Resources & Reg Planning, State Key Lab Efficient Utilizat Arid & Semiarid A, 12 South Rd, Beijing 100081, Peoples R China

2.Jiangxi Inst Red Soil, Ctr Red Soil Improvement, Natl Engn & Technol Res, Nanchang 331717, Peoples R China

3.Heilongjiang Acad Agr Sci, Inst Soil Fertilizer & Environm Resources, Harbin 150086, Peoples R China

4.Jilin Acad Agr Sci, Inst Agr Resource & Environm, Changchun 130033, Peoples R China

5.Shenyang Agr Univ, Coll Land & Environm, Dongling Rd 120, Shenyang 110866, Peoples R China

6.Qingdao Agr Univ, Coll Resources & Environm, Qingdao 266109, Peoples R China

7.Henan Acad Agr Sci, Inst Plant Nutr & Environm Resources Sci, Zhengzhou 450002, Peoples R China

8.Xuzhou Inst Agr Sci Xuhuai Dist Jiangsu Prov, Xuzhou 221100, Peoples R China

9.Anhui Acad Agr Sci, Soil & Fertilizer Res Inst, Key Lab Nutrient Cycling & Resources Environm Anhu, Hefei 230031, Anhui, Peoples R China

10.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China

11.Univ Melbourne, Fac Sci, Sch Agr Food & Ecosyst Sci, Parkville, Vic 3010, Australia

关键词： Gross nitrification; Gross N immobilization; Manure; Chemical fertilizer; Microbial abundance

期刊名称：AGRONOMY FOR SUSTAINABLE DEVELOPMENT （ 影响因子：6.7； 五年影响因子：8.5 ）

ISSN： 1774-0746

年卷期： 2025 年 45 卷 1 期

页码：

收录情况： SCI

摘要： Nitrification and nitrogen (N) immobilization are important pathways in soil N transformations, involving soil N loss and retention, respectively. The ratio of nitrification to N immobilization generally reflects the potential risk of soil N loss. However, little is known about the response of this ratio to anthropogenic carbon (C) and N inputs, but also climate and soil conditions. Here, we aimed to elucidate, for the first time, the impacts of chemical fertilizer and manure application on the ratio of gross nitrification to N immobilization by using 15N dilution technology, based on ten long-term fertilization trials spanning multiple climatic zones in eastern China. Results showed that manure application differentially increased gross N immobilization rather than nitrification compared to the chemical fertilizer treatment, leading to manure-induced decreases in gross nitrification to N immobilization ratio ranging from 1.2 to 93% across the sites. The decreased gross nitrification to N immobilization ratio in the manure treatment was mainly due to the increased ratio of bacteria to nitrifiers abundance. Manuring was more effective for a decrease in the gross nitrification to N immobilization ratio at sites characterized by high rainfall and low soil pH, as it prevented soil pH decline thereby favoring bacterial abundance and N immobilization. Consequently, manure application resulted in a substantial increase in soil total N accumulation, facilitated by increased microbial N immobilization that promoted microbial biomass. These findings suggest that substituting manure for chemical fertilizer in the areas with high rainfall and acidic soils promisingly reduces soil N loss risk, with positive consequences for soil N retention. This knowledge highlights the potential to reconcile soil N loss and fertility improvement through optimizing regional manure management, which offers valuable insights for the development of a tailored regional fertilization management strategy.