中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 一次性施肥技术对冬小麦/夏玉米轮作系统土壤N_2O排放的影响 农业环境科学学报 2016,35 (01) 195-204
Position: Home > Articles > Effect of single basal fertilization on N2O emissions in wheat and maize rotation system Journal of Agro-Environment Science 2016,35 (01) 195-204

一次性施肥技术对冬小麦/夏玉米轮作系统土壤N_2O排放的影响

作  者：
张婧;夏光利;李虎;朱国梁;牟小翎;王立刚;黄诚诚;江雨倩
单  位：
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;泰安市农业科学研究院
关键词：
一次性施肥;冬小麦/夏玉米轮作;N2O排放
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。
译  名：
Effect of single basal fertilization on N2O emissions in wheat and maize rotation system
作  者：
ZHANG Jing;XIA Guang-li;LI hu;ZHU Guo-liang;MOU Xiao-ling;WANG Li-gang;HUANG Cheng-cheng;JIANG Yu-qian;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;Taian Academy of Agricultural Sciences;
关键词：
single fertilization;;wheat and maize rotation system;;N_2O emission
摘  要：
Nitrous oxide(N_2O), as one of the most important greenhouse gases, plays a crucial role in the global warming. Nitrogen(N)fertilizer is the primary source of N_2O emissions from agricultural soils. A field experiment was conducted to study the effect of single basal fertil-ization on N_2O emissions in wheat and maize rotation system. N_2O fluxes along with main environmental drivers(i.e., soil temperature, soil moisture, and soil NO-3-N)were observed in 4 treatments, including control treatment(CK), optimized fertilization treatment(OPT), single basal fertilization treatment(OPT1)and controlled release fertilization treatment(CRF), during the period of October 2013 to October 2014.Results showed that the peaks of N_2O emissions were usually observed at the event of fertilization accompanied with irrigation or precipitation. The N_2O emission rates ranged from-0.24~2.78 mg N_2O·m-2·h~(-1), with daily means ranging from 23.88~65.46 μg N_2O·m-2·h~(-1). The OPT1 and CRF treatments both decreased the N_2O peak values, but did not change the seasonal variation patterns. The N_2O fluxes were pos-itively correlated with soil water filled pore space(WFPS), but not with soil temperature at 5 cm depth. Compared with the OPT treatment,the OPT1 and CRF treatments both significantly reduced annual N_2O emissions by 27.47% and 22.80%, respectively. Annual emission fac-tor(EF)of N_2O emissions was calculated to be 0.28%~0.77% of the fertilizer N. It is concluded that single basal fertilization management could effectively reduce N_2O emissions from wheat and maize rotation system.

相似文章

导出引用
计量
文章访问数: 7
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46