山东农业科学2016，Vol.48Issue(10)：86-91,6.DOI:10.14083/j.issn.1001-4942.2016.10.021
北方典型设施菜地土壤 N2O 排放特征
Emission Characteristics of Soil Nitrous Oxide from Typical Greenhouse Vegetable Fields in North China
摘要
Abstract
To make clear the emission characteristics of soil N2O from typical greenhouse vegetable fields in North China,an experiment was conducted in greenhouse tomato field in Shouguang City,Shandong Prov-ince,the hometown of Chinese vegetables.The N2O fluxes in 4 nitrogen treatments,no N fertilizer (CK), single organic fertilizer (OM),farmer conventional fertilization (FP)and optimized and reduced nitrogen fer-tilization (OPT),were measured using a close chamber -gas chromatograph method.The effects of different fertilization treatments on N2O emission and tomato yield were analyzed.The results showed that following the fertilization and irrigation,the pulsed emissions of N2O were measured.The highest N2O emission peak ap-peared after basal fertilization and irrigation and could be maintained for about 20 days.While the N2O emis-sion peak caused by topdressing was smaller and lasted only 3 ~5 days.The statistical analysis showed that the N2 O fluxes were affected by air temperature,soil temperature and WFPS at soil depth of 3 cm.The total con-tents of soil N2O fluxes had significant differences in treatments.The total content orderly was FP of 14.77 kg/hm2 ,OPT of 9.73 kg/hm2 ,OMof 6.84 kg/hm2 and CK of 2.37 kg/hm2 .The N2O emission coefficient ranged from 0.83% ~1.10%,which was close or more than the recommended value (1.0%)by IPCC. Compared with the FP treatment,the tomato yield in OPT treatment,whose application rate of chemical N fer-tilizer decreased by about 60%,increased by 2.2%.Under the current management measures,the reasonable reduction on application rate of organic manure and chemical nitrogen fertilizer could effectively reduce the N2O emissions in greenhouse vegetable fields.关键词
设施菜地/N2O 排放特征/影响因素/排放系数/番茄产量Key words
Greenhouse vegetable field/N2O emission characteristic/Influencing factor/Emission coef-ficient/Tomato yield分类
农业科技引用本文复制引用
徐钰,刘兆辉,魏建林,石瞡,谭德水,王梅,李国生,江丽华..北方典型设施菜地土壤 N2O 排放特征[J].山东农业科学,2016,48(10):86-91,6.基金项目
国家公益性行业（农业）科研专项（201103039）；山东省自然科学基金项目（ZR2013DQ023）；山东省科技发展计划项目 （）
