| 一次性施肥技术对冬小麦/夏玉米轮作系统土壤N2O排放的影响 |
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| 引用本文： | 张婧,夏光利,李虎,朱国梁,牟小翎,王立刚,黄诚诚,江雨倩.一次性施肥技术对冬小麦/夏玉米轮作系统土壤N2O排放的影响[J].农业环境科学学报,2016,35(1):195-204. |
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| 作者姓名： | 张婧 夏光利 李虎 朱国梁 牟小翎 王立刚 黄诚诚 江雨倩 |
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| 作者单位： | 1. 中国农业科学院农业资源与农业区划研究所/农业部面源污染控制重点实验室/中国农业科学院-美国新罕布什尔大学可持续农业生态系统研究联合实验室,北京,100081;2. 泰安市农业科学研究院,山东泰安,271000 |
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| 基金项目： | 公益性行业(农业)科研专项“主要粮食作物一次性施肥技术研究与示范”(201303103);农业源温室气体监测与控制技术研究(201103039) |
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| 摘 要： | 利用静态暗箱-气相色谱法对华北平原冬小麦/夏玉米轮作系统施氮条件土壤N2O排放特征进行周年观测,以探讨不同处理对照(CK)、优化施氮(OPT)、优化氮肥一次性施用(OPT1)和控释肥(CRF)]土壤N_2O排放特征及土壤温度、湿度对土壤N_2O排放的影响。结果表明:冬小麦/夏玉米轮作系统中土壤N2O排放峰值主要出现在施肥+降雨或灌溉事件后,不同处理N_2O排放通量变化范围在-0.24~2.78 mg N2O·m~(-2)·h~(-1),平均排放通量23.88~65.46μg N_2O·m~(-2)·h~(-1),OPT1和CRF两个一次性施肥处理可以降低小麦和玉米基肥施用后土壤N_2O排放峰值,但未改变轮作周期土壤N_2O排放季节变化规律;土壤含水量对土壤N2O排放有显著影响,且对夏玉米季土壤N2O排放影响大于冬小麦季;各处理土壤N2O排放通量与5 cm深度土壤温度之间均无相关性;不同处理N_2O年度排放总量差异显著,与OPT处理相比,OPT1处理和CRF处理N2O年排放总量分别减少27.47%和22.80%。各处理N_2O排放系数介于0.28%~0.50%,均低于IPCC 1.0%的推荐值,且各处理产量之间没有显著性差异,因此一次性施肥技术能够在保证产量的前提下,有效减少冬小麦/夏玉米轮作系统土壤N2O排放。
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| 关 键 词： | 一次性施肥 冬小麦/夏玉米轮作 N2O排放 |
| 收稿时间： | 2015/7/21 0:00:00 |
Effect of single basal fertilization on N2O emissions in wheat and maize rotation system |
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| ZHANG Jing,XIA Guang-li,LI hu,ZHU Guo-liang,MOU Xiao-ling,WANG Li-gang,HUANG Cheng-cheng and JIANG Yu-qian.Effect of single basal fertilization on N2O emissions in wheat and maize rotation system[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2016,35(1):195-204. |
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| Authors: | ZHANG Jing XIA Guang-li LI hu ZHU Guo-liang MOU Xiao-ling WANG Li-gang HUANG Cheng-cheng and JIANG Yu-qian |
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| Institution: | Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/ Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture/ CAAS-UNH Joint Laboratory for Sustainable Agro-ecosystem Research, Beijing 100081, China,Taian Academy of Agricultural Sciences, Taian 271000, China,Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/ Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture/ CAAS-UNH Joint Laboratory for Sustainable Agro-ecosystem Research, Beijing 100081, China,Taian Academy of Agricultural Sciences, Taian 271000, China,Taian Academy of Agricultural Sciences, Taian 271000, China,Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/ Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture/ CAAS-UNH Joint Laboratory for Sustainable Agro-ecosystem Research, Beijing 100081, China,Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/ Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture/ CAAS-UNH Joint Laboratory for Sustainable Agro-ecosystem Research, Beijing 100081, China and Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/ Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture/ CAAS-UNH Joint Laboratory for Sustainable Agro-ecosystem Research, Beijing 100081, China |
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| Abstract: | |
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| Keywords: | single fertilization wheat and maize rotation system N2O emission |
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