中国农业气象 ›› 2016, Vol. 37 ›› Issue (03): 281-288.doi: 10.3969/j.issn.1000-6362.2016.03.003

• 论文 • 上一篇    下一篇

水肥减量对设施芹菜地N2O排放的影响

 

杨岩, 孙钦平, 邹国元, 许俊香,李吉进,刘春生, 江丽华
  

  1. 1. 山东省农业科学院农业资源与环境研究所/山东省植物营养与肥料重点实验室,济南 250100;2. 北京市农林科学院植
    物营养与资源研究所,北京 100097;3. 山东农业大学资源与环境学院/土肥资源高效利用国家工程实验室,泰安271018
  • 收稿日期:2015-09-06 出版日期:2016-06-20 发布日期:2016-06-20
  • 作者简介:杨岩(1987-),博士,主要研究方向为植物营养与施肥技术。E-mail:tornado23@126.com
  • 基金资助:

    公益性行业(农业)科研专项(201303089-2);国家科技支撑项目(2012BAD14B01-08);北京市农林科学院青年科研基金(QNJJ201413);山东省科技发展计划(2013GNC11204)

 Effects of Reducing Irrigation and Organic Fertilization on N2O Emissions from Celery Field in Facilities

 

YANG Yan, SUN Qin-ping, ZOU Guo-yuan, XU Jun-xiang, LI Ji-jin, LIU Chun-sheng, JIANG Li-hua
  

  1. 1. Institute of Agricultural Resources and Environment, Shandong Academy of Agricultural Sciences/Shandong Province Key
    Laboratory of Plant Nutrition and Fertilizer, Jinan 250100, China; 2.Institute of Plant Nutrition and Resources, Beijing Academy
    of Agriculture and Forestry Sciences, Beijing 100097; 3.College of Resources and Environment Science, Shandong Agricultural University/National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer, Tai’an 271018
  • Received:2015-09-06 Online:2016-06-20 Published:2016-06-20

摘要:

为明确减量灌溉和施肥对设施菜地N2O排放的影响,提出有效的N2O减排措施,本研究采用静态箱法,对北京郊区设施芹菜在灌溉和有机肥(沼渣)减量处理下的N2O排放进行全生长季监测,分析灌溉和有机肥减量对土壤充水孔隙度(WFPS)、NO3--N和NH4+-N含量及土壤N2O排放的影响。试验为2个灌溉量和3个有机肥施用量的裂区双因素设计,具体为:常规灌溉量(H处理)下的常规施肥(HN)、减量1/3施肥(HN3)和不施肥 (HN0),以及减量20%灌溉(L处理)下的常规施肥(LN)、减量1/3施肥(LN3)和不施肥 (LN0)共6个处理。结果表明,L处理在保证芹菜产量的前提下,对土壤充水孔隙度及无机氮含量无显著影响,但N2O排放总量较H处理减少32.23%,达极显著水平(P<0.01)。与常规施肥处理相比,减量1/3施肥和不施肥处理的土壤NO3--N含量分别降低43.96%和76.42%,均达极显著水平(P<0.01),不同施肥量处理间土壤NH4+-N含量无显著差异;芹菜产量随施氮量增加而增加,但减量1/3施肥和常规施肥处理对芹菜产量影响无显著差异,芹菜全生长季的土壤累积N2O排放总量显著减少62.04%(P<0.01)。本试验条件下,减量20%灌溉(L处理)和减量1/3施肥(N3处理)均能保证芹菜产量,显著降低芹菜地N2O排放通量,减少生产成本投入。

关键词: 水肥减量, 土壤充水孔隙度, NO3--N含量, NH4+-N含量, N2O减排 

Abstract:

In order to monitor the N2O emissions after irrigation and organic fertilization from vegetable soil in celery growing season, and make sure effective reduction measures were put forward, an experiment with 6 treatments was done in Beijing suburbs by using static chamber measurement techniques. The impact of the -5cm), NO3--N content, NH4+-N content and N2O emissions were analyzed. It was a split block experiment with irrigation and fertilization two factors. The 6 treatments were as fellows: conventional irrigation under the condition of conventional fertilization (HN), conventional fertilization <0.01), however, had no significantly influence on celery yield, WFPS and Nmin content of soil. Compared with conventional fertilization, the treatments of conventional fertilization with 1/3 decrement and no fertilization had no significantly influence on NH4+-N content of soil, however, significantly reduced NO3--N content of soil (P<0.01) by 43.96% and 76.42%, respectively. In addition, conventional fertilization with 1/3 decrement made the cumulative N2O emissions from the soil in the whole growing season of celery, significantly reduced by 62.04%, however, had no significantly influence on celery yield. In this field experiment, conventional irrigation with 20% decrement (L) and conventional fertilization with 1/3 decrement (N3) both significantly reduced N2O emissions, and had no significantly influence on the celery yield, furthermore, the combination of the decrement of irrigation and fertilization (LN3) can reduce the production costs at the same time.reductions of irrigation and organic fertilization (biogas residue) on the water-filled pore space (WFPS, 0with 1/3 decrement (HN3) and no fertilization (HN0), and conventional irrigation with 20% decrement under the condition of conventional fertilization (LN), conventional fertilization with 1/3 decrement (LN3) and no fertilization (LN0). The results showed that, conventional irrigation with 20% decrement reduced total N2O emissions by 32.23%, significantly lower than that of conventional irrigation (P )

Key words:

Reduced irrigation and fertilization, 
	                                    	                            											                                       Water-filled pore space(WFPS), 
	                                    	                            											                                        NO3--N content of soil, 
	                                    	                            											                                        NH4+-N content of soil, 
	                                    	                            											                                        Reduce N2O emissions