| 有机肥及补充灌溉对旱地农田温室气体排放的影响 |
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| 引用本文： | 孙海妮,岳善超,王仕稳,牛宗成,殷俐娜,邓西平.有机肥及补充灌溉对旱地农田温室气体排放的影响[J].环境科学学报,2018,38(5):2055-2065. |
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| 作者姓名： | 孙海妮 岳善超 王仕稳 牛宗成 殷俐娜 邓西平 |
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| 作者单位： | 西北农林科技大学资源环境学院;西北农林科技大学水土保持研究所;中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室 |
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| 基金项目： | 国家重点基础研究发展计划（973）项目（No.2015CB150402）；国家科技支撑计划（No.2015BAD22B01） |
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| 摘 要： | 在农业生产中,提高作物产量减少农田温室气体排放具有重要意义.本文采用静态箱-气相色谱法,在黄土高原半干旱半湿润区,以单施氮肥180 kg·hm~(-2)(以N计)为对照,研究了氮肥180 kg·hm~(-2)+有机肥45×103kg·hm~(-2)(NM)、氮肥180 kg·hm~(-2)+有机肥45×103kg·hm~(-2)+拔节期灌水(NMW)处理在冬小麦生育期温室气体的变化规律及其综合增温潜势(Global warming potential,GWP),并计算温室气体排放强度(Greenhouse gas intensity,GHGI),以明确有机肥及补充灌溉的增产潜力及对温室气体的减排效果.结果表明:(1)整个生育期CO_2排放速率随作物生长发育的加速而逐渐加快,接近成熟期其排放速率降低;N_2O排放峰均出现在施肥、降雨及灌水后.NM、NMW处理的CO_2累积排放量(以C计,下同)分别为14933.35 kg·hm~(-2)、15929.74 kg·hm~(-2),比对照分别增加了22.8%、31.0%;N_2O累积排放量(以N计,下同)分别为0.48kg·hm~(-2)、0.52 kg·hm~(-2),比对照分别降低了23.8%、17.5%;CH4累积吸收量分别为1.73 kg·hm~(-2)、1.87 kg·hm~(-2),比对照分别降低了18.4%、11.8%.(2)CH4吸收速率与土壤温度呈显著性正相关,而与土壤含水量呈显著性负相关;CO_2排放速率与土壤温度及含水量均呈显著性正相关;N_2O排放速率与土壤温度、含水量及硝态氮含量均呈显著性正相关,与铵态氮含量呈负相关.(3)NM、NMW处理的GWP比对照分别降低了27.8%、21.2%;NM、NMW均显著增加了小麦产量,增产率分别为24.6%、36.7%.NM、NMW的GHGI比对照分别降低了41.9%、42.4%.说明在施用有机肥及有机肥加补充灌水在增加作物产量的同时,达到了温室气体减排的作用.
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| 关 键 词： | 有机肥 灌溉 冬小麦 温室气体 综合增温潜势 温室气体强度 |
| 收稿时间： | 2017/10/31 0:00:00 |
| 修稿时间： | 2017/12/12 0:00:00 |
Effects of manure and supplementary irrigation on greenhouse gas emission in dryland fields |
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| SUN Haini,YUE Shanchao,WANG Shiwen,NIU Zongcheng,YIN Lina and DENG Xiping.Effects of manure and supplementary irrigation on greenhouse gas emission in dryland fields[J].Acta Scientiae Circumstantiae,2018,38(5):2055-2065. |
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| Authors: | SUN Haini YUE Shanchao WANG Shiwen NIU Zongcheng YIN Lina and DENG Xiping |
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| Institution: | 1. College of Resources and Environment, Northwest A & F University, Yangling 712100;2. Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100,1. Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100;2. State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Insitute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100,1. College of Resources and Environment, Northwest A & F University, Yangling 712100;2. Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100;3. State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Insitute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100,1. College of Resources and Environment, Northwest A & F University, Yangling 712100;2. Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100,1. College of Resources and Environment, Northwest A & F University, Yangling 712100;2. Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100;3. State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Insitute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100 and 1. Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100;2. State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Insitute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100 |
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| Abstract: | |
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| Keywords: | manure irrigation winter wheat greenhouse gases global warming potential greenhouse gas intensity |
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