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当前位置: 首页 > 文章 > 施肥对河套灌区土壤CO_2和N_2O排放的影响 灌溉排水学报 2017 (7) 66-70
Position: Home > Articles > Fertilization Affects the Emission of CO_2 and N_2O in Hetao Irrigation Area Journal of Irrigation and Drainage 2017 (7) 66-70

施肥对河套灌区土壤CO_2和N_2O排放的影响

作  者：
白雪原;红梅;杨彦明;郜翻身;霍利霞;张建强
单  位：
内蒙古土壤肥料工作站;内蒙古农业大学;内蒙古巴彦淖尔杭锦后旗农业技术推广中心
关键词：
施肥;CO2;N2O;排放强度
摘  要：
以河套灌区草甸碱化土为研究对象,设缓控肥(HK)、颗粒有机肥(F)、微生物菌肥(W)和农民习惯施肥(CK)4个处理,于2015年5—10月,利用静态箱-气相色谱法监测玉米整个生育期土壤CO_2和N_2O的排放量,并对玉米季农田温室气体排放量和产生的综合温室效应进行测算,研究了农田表层土壤温室气体的排放量和增温潜势。结果表明,(1)各处理N_2O的排放峰值均出现在施肥10 d后。玉米整个生育期HK处理的单位时间排放量最少(0.25 mg/(m2?h)),F处理的排放量最多(0.67 mg/(m2?h)),F处理N_2O累计排放量比CK高出62.40%;CK分别比W、HK处理N_2O排放量高出19.71%、54.26%。(2)各处理间CO_2排放差异显著(P<0.05)。玉米整个生育期,W处理累积排放量最少(14 639.26 kg/hm2),F处理的排放量最多(18 603.4 kg/hm2),CK比W处理CO_2排放量高16.75%。(3)各施肥处理综合增温效应表现为HK处理
译  名：
Fertilization Affects the Emission of CO_2 and N_2O in Hetao Irrigation Area
作  者：
BAI Xueyuan;HONG Mei;YANG Yanming;GAO Fanshen;HUO Lixia;ZHANG Jianqiang;Inner Mongolia Agricultural University;Inner Mongolia Soil and Fertilizer Station;Hang Jin Hou Banner,Agricultural Centers;
关键词：
fertilization;;CO2;;N2O;;emission intensity
摘  要：
Impact of fertilization on greenhouse emission in Hetao Irrigation District was investigated in this paper. Four treatments were examined: slowly controlled releasing fertilizers(HK), organic fertilizer(F), microbial fertilizer(W) and business as usual(CK) from May to October in 2015. The emission of CO_2 and N_2O from a maize field was measured using static chamber gas chromatography to investigate the potential greenhouse gas emissions and temperature change at soil surface. The result revealed that(1) N_2O emission peaked in all treatments 10 days after applying N fertilizer. HK had the lowest while F had the highest emission rate during the whole growing season. N_2O emission from F treatment was 62.40% higher than that from CK, whereas the N_2O emission from CK was 19.71% and 54.26% higher than that from W and HK treatments respectively.(2) There were a significant difference in CO_2 emission between the treatments, with W having the lowest emission and F the highest. CO_2 emission from the CK was 16.75% higher than that from W.(3)The increase in soil-surface temperature under different treatments was in the order of HK

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