农业机械学报2024，Vol.55Issue(5)：312-322,11.DOI:10.6041/j.issn.1000-1298.2024.05.030
温室气体排放与番茄产量对水肥气耦合的响应机制研究
Response Mechanism of Soil Greenhouse Gas Emission and Yield of Greenhouse Tomato to Water-fertilizer-air Coupling
摘要
Abstract
In order to seek the irrigation mode of greenhouse tomato land water conservation,emission reduction and superior yield,taking tomato(Jinpeng 8)as the research object,the experiment set I1 and I2(corresponding to the crop-dish coefficient k 0.8 and 1.0)two irrigation levels,F1 and F2(corresponding to the application of nitrogen 180 kg/hm2 and 240 kg/hm2)two nitrogen application levels with A1,A2 and CK(1 time and 2 times Venturi aeration,respectively,without aeration CK was used as control treatment)as three aeration levels,a three-factor completely randomized design with ten treatments,each treatment repeated three times,was used to monitor and analyze the greenhouse gas emissions during the whole life cycle of tomato by static dark box-gas chromatography,and to investigate the changing patterns of soil CO2,N2O and CH4 emissions and tomato yield.The effects of irrigation level,nitrogen application level and gas addition level on the yield and greenhouse gas emission of greenhouse tomato were analyzed,and the net global warming potential(NGWP)and greenhouse gas intensity(GHGI)were synthesized,so as to put forward the greenhouse tomato water-fertilizer-air-integrated drip irrigation management mode with the goal of water conservation,emission reduction and high yield.The results showed that increasing irrigation level and nitrogen application level both increased soil CO2 and N2 O emission fluxes,with an average increase of 24.8％(P＜0.05)versus 14.8％(P＞0.05)in the I2 treatment compared with that in the I1 treatment,and an average increase of 8.6％(P＞0.05)versus 34.9％(P＜0.05)in the F2 treatment compared with that in the F1 treatment.Aerated irrigation had a significant effect on soil CO2 and N2 O emission fluxes,which increased by an average of 5.5％and 10.0％(P＞0.05)in A1,20.9％and 62.9％(P＜0.05)in A2 treatments,respectively,as compared with that in CK treatment.Soil CH4 emission fluxes during the whole tomato reproductive period did not have a significant pattern of change,showing the soil as a sink for CH4,increasing irrigation level would increase soil CH4 emission fluxes,while increasing nitrogen application level would reduce CH4 emission fluxes,I2 treatment increased by 27.8％on average compared with I1(P＜0.05),and F2 treatment decreased by 25.5％on average compared with F1(P＜0.05).Aerating,the fertilization and irrigation significantly increased tomato yield(P＜0.05).Considering the economic and ecological factors,the benefits of A1F2I1 treatment were the best,the combination strategy of aerating level A1,applying nitrogen level F2,and irrigating level I1 can take into account the requirements of water conservation and superior yield reduction,and provide a reference for the better irrigation mode of greenhouse tomato in Northwest China.关键词
温室气体/番茄产量/加气灌溉/水肥气耦合/全球净增温潜势Key words
greenhouse gas/tomato yield/aerated irrigation/water-fertilizer-air coupling/net global warming potential分类
农业科技引用本文复制引用
孙亚楠,段琳博,钟华昱,蔡焕杰,王晓云,赵政鑫..温室气体排放与番茄产量对水肥气耦合的响应机制研究[J].农业机械学报,2024,55(5):312-322,11.基金项目
国家自然科学基金项目(52179046、51309192) （52179046、51309192）
