| 有机氮替代比例对冬小麦/夏玉米轮作体系作物产量及N2O排放的影响 |
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| 引用本文： | 侯苗苗,吕凤莲,张弘弢,周应田,路国艳,Ayaz Muhamm,黎青慧,杨学云,张树兰.有机氮替代比例对冬小麦/夏玉米轮作体系作物产量及N2O排放的影响[J].环境科学,2018,39(1):321-330. |
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| 作者姓名： | 侯苗苗 吕凤莲 张弘弢 周应田 路国艳 Ayaz Muhamm 黎青慧 杨学云 张树兰 |
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| 作者单位： | 西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,陕西省土肥站, 西安 710003,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌 712100 |
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| 基金项目： | 国家重点研发计划项目（2016YFD0800105） |
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| 摘 要： | 控制农业温室气体排放(如N_2O)是减缓全球气候变暖的一个重要措施.本研究通过动态监测小麦-玉米轮作体系N_2O排放通量,探究不施任何肥料(对照,CK)、单施氮磷钾化肥(NPK)、75%NPK+25%(有机氮M)(25%M)、50%NPK+50%M(50%M)、25%NPK+75%M(75%M)以及100%M,即不同有机氮替代比例对陕西关中塿土冬小麦/夏玉米轮作体系N_2O排放及作物产量的影响.结果表明,各处理N_2O排放通量在施肥、降雨或灌水后出现排放峰值.在小麦季各处理变化幅度为-1.33~144.2μg·(m~2·h)~(-1),其中NPK处理峰值最高.玉米季各处理变化幅度为88.2~1 800.1μg·(m~2·h)~(-1),50%M处理峰值最高.小麦/玉米一个轮作年不同处理N_2O排放总量为429.8~2 632.1 g·hm~(-2),且50%M25%MNPK75%M100%MCK.无论小麦、玉米还是一个轮作年总产量,施肥处理产量均显著高于对照.小麦季,施用有机肥的处理小麦产量均显著高于单施化肥处理,增幅达26.1%~50.0%.玉米季,50%M和75%M处理产量与NPK相似,而25%M和100%M处理玉米产量显著低于NPK处理.小麦/玉米轮作总产量变幅为9 166~17 496 kg·hm~(-2),其中50%M和75%M处理显著高于NPK处理,25%M和100%M处理与NPK处理无显著差异.综合考虑塿土小麦/玉米轮作体系有机氮替代化肥氮75%最好,可以保证作物产量、实现N_2O减排.
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| 关 键 词： | 有机氮替代比例 冬小麦/夏玉米轮作体系 产量 N2O排放通量 N2O排放系数 |
| 收稿时间： | 2017/7/3 0:00:00 |
| 修稿时间： | 2017/7/31 0:00:00 |
Effect of Organic Manure Substitution of Synthetic Nitrogen on Crop Yield and N2O Emission in the Winter Wheat-Summer Maize Rotation System |
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| HOU Miao-miao,L&#; Feng-lian,ZHANG Hong-tao,ZHOU Ying-tian,LU Guo-yan,Ayaz Muhamma,LI Qing-hui,YANG Xue-yun and ZHANG Shu-lan.Effect of Organic Manure Substitution of Synthetic Nitrogen on Crop Yield and N2O Emission in the Winter Wheat-Summer Maize Rotation System[J].Chinese Journal of Environmental Science,2018,39(1):321-330. |
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| Authors: | HOU Miao-miao L&#; Feng-lian ZHANG Hong-tao ZHOU Ying-tian LU Guo-yan Ayaz Muhamma LI Qing-hui YANG Xue-yun and ZHANG Shu-lan |
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| Institution: | Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China,Shaanxi Station of Soil and Fertilizer, Xi''an 710003, China,Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China and Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China |
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| Abstract: | |
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| Keywords: | organic nitrogen substitution winter wheat-summer maize cropping system yield N2O emission flux N2O emission coefficient |
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