干旱区生态环境知识资源中心(Arid): 水分管理对旱直播稻温室气体排放与土壤无机氮的影响

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	水分管理对旱直播稻温室气体排放与土壤无机氮的影响
其他题名	Effects of Water Management on Greenhouse Gas Emission and Soil Inorganic Nitrogen of Dry Direct Seeding Rice
	魏永霞; 冀俊超; 刘慧; 郭彦君; 郑衍波; 石蕴
来源期刊	农业机械学报
ISSN	1000-1298
出版年	2021
卷号	52 期号:11 页码:305-314
中文摘要	为探究寒地黑土区不同水分管理方案对旱直播水稻温室气体排放和土壤无机氮的影响,设置4个处理:淹灌旱直播(YH)、湿灌旱直播(SH)、旱管旱直播(HH)和常规插秧淹灌(CK),并以CK处理作为对照,采用微区测坑进行试验,研究了旱直播水稻对温室气体甲烷(CH_4)和氧化亚氮(N_2O)排放量、全球增温潜势(GWP)、以产量为基准的全球变暖潜势(GWP_y)、0~60 cm土壤剖面铵态氮(NH_4~+-N)和硝态氮(NO_3~--N)含量的影响,分析了0~20 cm土层土壤温度、CH_4和N_2O排放量和0~20 cm土层NH_4~+-N和NO_3~--N含量的相关关系。结果表明:各处理CH_4和N_2O排放量均呈先增后减的变化趋势,CH_4排放峰值出现在拔节孕穗期,N_2O排放峰值出现在抽穗开花期。各处理CH_4累积排放量、GWP和GWP_y由大到小均表现为CK、YH、SH、HH,N_2O累积排放量由大到小表现为HH、SH、YH、CK。CK、YH、SH处理土壤NH_4~+-N和NO_3~--N含量在时间和剖面上的变化规律基本一致,从时间上看,NH_4~+-N含量峰值出现在分蘖中期和抽穗开花期,而NO_3~--N含量峰值出现在分蘖前期;从土壤剖面上看,CK、YH、SH处理NH_4~+-N和NO_3~--N含量分别以20~40 cm和40~60 cm土层最高,而HH处理NH_4~+-N和NO_3~--N含量分别以40~60 cm和0~20 cm土层最高。各处理稻田5、10、15、20 cm土层土壤温度(T_5、T_(10)、T_(15)、T_(20))均呈先升后降的变化趋势。CK、YH、SH、HH处理T_5、T_(10)、T_(15)、T_(20)与CH_4排放量、NH_4~+-N含量呈正相关;YH处理T_(15)、T_(20)与N_2O排放量呈正相关,与NO_3~--N含量呈负相关;SH、HH处理T_5、T_(10)、T_(15)与N_2O排放量呈负相关,与NO_3~--N含量呈正相关。YH、SH、HH处理NH_4~+-N和NO_3~--N含量呈此消彼长的密切关系。本研究可为东北黑土区旱直播稻田减缓温室效应和土壤氮素高效利用提供理论依据。
英文摘要	In order to explore the effects of different water management schemes on greenhouse gas emission and soil inorganic nitrogen of dry direct seeding rice in the cold black soil region, micro-area test pits were used in the experiment. The effects of dry direct seeding rice on methane (CH_4) and nitrous oxide (N_2O) emission fluxes, global warming potential (GWP), global warming potential based on yield (GWP_y), the contents of ammonium nitrogen (NH_4~+-N) and nitrate nitrogen (NO_3~--N) in 0~60 cm soil profile were studied. The relationships among soil temperature in 0~20 cm soil layer, CH_4 and N_2O emission fluxes and content of NH_4~+-N and NO_3~--N in 0~20 cm soil layer were analyzed. Four treatments were set: flooded irrigation dry direct seeding rice (YH), wet irrigation dry direct seeding rice (SH), arid irrigation dry direct seeding rice (HH) and transplanting flooded rice (CK), and CK as the control. Results showed that the CH_4 and N_2O emission fluxes in four treatments showed the trend from increasing to decreasing, the CH_4 emission peak appeared in the jointing and booting stage, and N_2O emission peak appeared in the heading and flowering stage. The cumulative emission of CH_4, GWP and GWP_y in four treatments from big to small were as follows: CK, YH, SH and HH, the cumulative emission of N_2O in four treatments from big to small were as follows: HH, SH, YH and CK. The changes of NH_4~+-N and NO_3~--N contents in CK, YH and SH were basically consistent in time and profile. In terms of time, the peak of NH_4~+-N content appeared in the middle tillering and the heading and flowering stages, while the peak of NO_3~--N content appeared in the early tillering stage. In terms of soil profile, the NH_4~+-N and NO_3~--N content of CK, YH and SH were the highest in 20~40 cm and 40~60 cm soil layers, respectively. The contents of NH_4~+-N and NO_3~--N of HH were the highest in 40~60 cm and 0~20 cm soil layers, respectively. The NH_4~+-N was the most important nitrogen source for CK and YH, and NO_3~--N was the most important nitrogen source for SH and HH. The soil temperature of 5 cm, 10 cm, 15 cm and 20 cm soil layers (T_5, T_(10), T_(15) and T_(20)) of four treatments showed the tendency that firstly increased and then decreased. The T_5, T_(10), T_(15) and T_(20) of CK, YH, SH and HH were positively correlated with CH_4 emission flux and NH_4~+-N content. In YH, the T_(15) and T_(20) were positively correlated with N_2O emission flux and negatively correlated with NO_3~--N content. In SH and HH, the T_5, T_(10) and T_(15) were negatively correlated with N_2O emission flux and positively correlated with NO_3~--N content. In YH, SH and HH, the content of NH_4~+-N was negatively correlated with the content of NO_3~--N. The research results can provide theoretical basis for the mitigation of greenhouse effect and efficient use of soil nitrogen in dry direct seeding paddy field in the black soil region of northeast China.
中文关键词	东北黑土区 ; 旱直播水稻 ; 气体排放 ; 增温潜势 ; 土壤氮 ; 相关性
英文关键词	black soil region of Northeast China dry direct seeding rice gas emission warming potential soil nitrogen correlation
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7090309
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377804
作者单位	魏永霞, 东北农业大学水利与土木工程学院;;东北农业大学, ;;农业农村部农业水资源高效利用重点实验室, 哈尔滨;;哈尔滨, ;; 150030;;150030.; 冀俊超, 东北农业大学水利与土木工程学院, 哈尔滨, 黑龙江 150030, 中国.; 郑衍波, 东北农业大学水利与土木工程学院, 哈尔滨, 黑龙江 150030, 中国.; 石蕴, 东北农业大学水利与土木工程学院, 哈尔滨, 黑龙江 150030, 中国.; 刘慧, 东北农业大学文理学院, 哈尔滨, 黑龙江 150030, 中国.; 郭彦君, 北京邮电大学现代邮政学院, 北京 100876, 中国.
推荐引用方式 GB/T 7714	魏永霞,冀俊超,刘慧,等. 水分管理对旱直播稻温室气体排放与土壤无机氮的影响[J],2021,52(11):305-314.
APA	魏永霞,冀俊超,刘慧,郭彦君,郑衍波,&石蕴.(2021).水分管理对旱直播稻温室气体排放与土壤无机氮的影响.农业机械学报,52(11),305-314.
MLA	魏永霞,et al."水分管理对旱直播稻温室气体排放与土壤无机氮的影响".农业机械学报 52.11(2021):305-314.