文献类型： 外文期刊

作者： Ding, Wuhan ¹ ; Zhang, Guilong ³ ; Yi, Xiaopei ² ; Kang, Jiahao ² ; Zhang, Jing ⁴ ; Li, Guichun ⁵ ; Zhang, Jianfeng ² ; Chang, Naijie ² ; Li, Hu ² ;

作者机构： 1.Guangdong Acad Agr Sci, Inst Agr Resources & Environm, Guangzhou 510640, Peoples R China

2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, State Key Lab Efficient Utilizat Arid & Semiarid A, Beijing 100081, Peoples R China

3.Minist Agr & Rural Affairs, Agroenvironm Protect Inst, Tianjin 300191, Peoples R China

4.Zhongkai Univ Agr & Engn, Coll Resources & Environm Sci, Engn & Technol Res Ctr Agr Land Pollut Prevent & C, Guangzhou 510225, Peoples R China

5.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China

关键词： Greenhouse cucumber-tomato field; Nitrogen budget; Reactive nitrogen footprint; Carbon footprint; Drip irrigation; Nitrogen fertilization

期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：11.1； 五年影响因子：11.0 ）

ISSN： 0959-6526

年卷期： 2023 年 424 卷

页码：

收录情况： SCI

摘要： Guaranteeing a robust supply of vegetables is a significant public welfare endeavor. However, the imple-mentation of irrational water and fertilizer regimes in greenhouse vegetable fields (GVF) has resulted in adverse environmental impacts. Therefore, it is crucial to develop water and fertilizer regimes to maintain the produc-tivity of greenhouse vegetables with less carbon (C) and reactive nitrogen (Nr) footprint. A four growing seasons experiment involving the cultivation of cucumbers and tomatoes was conducted in the suburbs of Beijing. The experiment comprised three treatments: flood irrigation with a conventional urea-N application (FN), drip fer-tigation with a conventional urea-N application (DN), and drip fertigation with a 50% reduction of urea-N application (DRN). The results showed that about 70% of annual N inputs in GVF were surplus, posing a high risk of loss. For the FN treatment, the N budget, Nr loss, Nr footprint per unit of vegetable yield (NrFY), Nr footprint per unit of net return (NrFR), greenhouse gas (GHG) emissions, C footprint per unit of vegetable yield (CFY), C footprint per unit of net return (CFR) were respectively quantified as follows: 1653 kg N ha- 1 yr- 1, 776 kg N ha- 1 yr- 1, 4.39 kg N t-1 yr-1, 24.48 kg N yen 10000-1 yr-1, 46548 kg CO2-eq ha- 1 yr- 1, 262.98 kg CO2-eq t-1 yr- 1 and 1467.58 kg CO2-eq yen 10000-1 yr-1. Compared with FN, DN significantly reduced Nr loss (25%), NrFY (24%), NrFR (22%), GHG emissions (6%), CFY (4%), while it increased N surplus (9.7%) and produced lower farmers' net return ( yen 13486 ha- 1 yr-1). Concurrently, DRN significantly reduced the N surplus, Nr loss, NrFY and NrFR by-35%, decreased the GHG emissions, CFY and CFR by-20%, and improved farmers' net return by yen 674 ha- 1 yr- 1 compared to FN treatment. Therefore, this study highlighted that an integrated water and fertilizer regulation strategy (drip irrigation replacing flood irrigation coupled with a 50% reduction in chemical N application) can simultaneously achieve environmental and economic benefits in the context of high N inputs. This contributes to the sustainable development of intensive vegetable cultivation systems.