| Cite this article: | 杜明智,王广帅,刘浩,等.设施番茄土壤温室气体排放对水氮管理的响应[J].灌溉排水学报,0,():-. |
| DU Mingzhi,WANG Guangshuai,LIU Hao,et al.设施番茄土壤温室气体排放对水氮管理的响应[J].灌溉排水学报,0,():-. |
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| This article has been：Browse 1047Times Download 0Times |
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| Response of greenhouse gas emissions from greenhouse tomato soil to water and nitrogen management |
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DU Mingzhi1, WANG Guangshuai2, LIU Hao2, NING Huifeng2, GAO Yang2, WANG Xingpeng1
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1.College of Water Resource and Architecture Engineering,Tarim University;2.Institute of Farmland Irrigation,Chinese Academy of Agricultural Sciences/Key Open Laboratory of Crop Water Demand and Regulation,Ministry of Agriculture
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| Abstract: |
| 【Objective】The objective is to explore the relationship between facility tomato production and soil greenhouse gas emissions under different water and nitrogen management, and find the most suitable combination of water and nitrogen "moderate water and nitrogen input, less greenhouse gas emissions, and higher yields".【Method】The research object of facility tomato soil was adopted by setting four nitrogen application gradients(F0: 0 kg/hm2, F1: 150 kg/hm2, F2: 300 kg/hm2 and F3: 450 kg/hm2) and three irrigation quotas(W1：0.5 Epan, W2：0.7 Epan and W3：0.9 Epan)are used to collect and analyze greenhouse gas emission fluxes from tomato soil in the facility by static box-gas chromatography. The effects of water and nitrogen coupling on soil greenhouse gas emission fluxes and cumulative emissions are compared and analyzed. Analyze the difference in greenhouse gas emission intensity in combination with production and global warming potential.【Result】The results showed that the N2O emission from the facility soil showed an increasing trend after fertilization, and the emission flux of CO2 and CH4 increased with the increase of the irrigation quota. The total cumulative emission of N2O increases significantly with the increase of nitrogen application, and the maximum can reach 0.959 kg/hm2. There is a significant positive correlation between global warming potential (GWP) and nitrogen (P<0.05), and there is a significant positive correlation between greenhouse gas emission intensity (GHGI) and tomato yield and the interaction of water and nitrogen (P<0.01). 【Conclusion】 From the comprehensive consideration of environmental and economic benefits, appropriately reducing the amount of nitrogen and optimizing the deficit irrigation quota can effectively reduce greenhouse gas emissions and ensure production. The optimal combination of water and low nitrogen which is F1W3 should be applied in green and efficient facility agricultural production. |
| Key words: Deficit irrigation;Nitrogen application;Global warming potential;Greenhouse gas intensity |
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