| 摘要: |
| 为探明再生水灌溉下不同氮肥对冬小麦土壤温室气体排放的影响，采用再生水和清水2种水质配以不同无机肥料（尿素、胺肥、缓释肥）的正交试验，分析不同试验处理对土壤温室气体排放和冬小麦产量的影响。结果表明：1）相对清水灌溉，再生水灌溉CO2日平均排放通量增加4.78%~29.93%，N2O日平均排放通量增加17.48%~32.50%。2）相对于再生水无施肥处理，再生水施肥处理CO2日平均排放通量分别增加了14.037%、13.230%、7.353%，N2O日平均排放通量分别增加了81.4%、99.2%、39.8%。3）再生水灌溉比地下水灌溉可以增加冬小麦产量，平均增幅3.58%。4）显著性分析表明：再生水灌溉下施肥种类对CO2日平均排放通量影响不显著（P>0.05），对N2O日平均排放通量影响显著（P<0.05）；2种水质对温室气体日平均排放通量影响不显著（P>0.05）；施肥种类和水质对冬小麦产量无显著影响（P>0.05）。 |
| 关键词: 温室气体 再生水 施肥种类 产量 |
| DOI：10.11841/j.issn.1007-4333.2017.01.12 |
| 投稿时间：2016-03-12 |
| 基金项目:国家自然科学基金项目（51279204） |
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| Effects of reclaimed water irrigation with different nitrogen fertilizers on gas emission in winter wheat field |
|
CHI Yanbing, REN Shumei, YANG Peiling, SHANG Fangze
|
| (College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China) |
| Abstract: |
| In order to investigate the influence of reclaimed water irrigation under different nitrogen fertilizers on greenhouse gas emissions from winter wheat soil,an orthogonal experiment was conducted with reclaimed water and groundwater of different inorganic fertilizers (urea,amine fat,slow-release fertilizer).The impacts of different experimental treatments on winter wheat yield and emissions of greenhouse gases from the soil were analyzed.The results showed that:The treatment of reclaimed water as opposed to groundwater,the average of daily CO2 flux form soil increased by 4.78%-29.93%.The average of daily N2O flux form soil was increased by 17.48%-32.50%;Fertilized treatment by urea,ammonium sulfate and slow-released fertilizer was compared with no fertilizer,the average of daily CO2 flux increases 14.037%,13.230% and 7.353%.And the average of daily CO2 flux increases 81.4%,99.2% and 39.8%;The irrigation of reclaimed water can increase the yield of winter wheat 3.58%;Significance analysis showed that reclaimed water had no significant effect on the emission of CO2 from the soil (P>0.05) and affected N2O emission flux significantly (P<0.05).In conclusion,the type of fertilizer and water quality had no significant effect on the yield of winter wheat. |
| Key words: greenhouse gas reclaimed water fertilizer yield |
