不同氮肥管理方式对华北粮田N2O排放和作物产量的影响分析
通过华北小麦和玉米田已发表文献分析，明确不同施氮量、氮肥基追比及氮素调控措施对土壤N2O排放和作物产量的影响。结果表明：高氮水平下减少氮肥用量并调整基追比有助于减少土壤N2O排放；添加硝化抑制剂双氰胺（DCD）对小麦和玉米产量的提高和土壤N2O的减排效果均较好。兼顾华北粮田N20减排和作物产量，小麦季推荐合理施氮量167-174kg·hm-2基追比1：1，添加DCD，土壤N2O总排放量为0-31kg·hm-2，籽粒产量6200kg·hm-2以上；玉米季推荐合理施氮量177-181kg·hm-2基追比2：3—1：2，添加DCD，土壤Nz0总排放量1．70kg·hm-2，籽粒产量9000kg·hm...
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| Published in | 农业资源与环境学报 Vol. 33; no. 4; pp. 340 - 348 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
农业农村部环境保护科研监测所
10.07.2016
中国农业生态环境保护协会 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 2095-6819 2095-6819 |
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| Summary: | 通过华北小麦和玉米田已发表文献分析，明确不同施氮量、氮肥基追比及氮素调控措施对土壤N2O排放和作物产量的影响。结果表明：高氮水平下减少氮肥用量并调整基追比有助于减少土壤N2O排放；添加硝化抑制剂双氰胺（DCD）对小麦和玉米产量的提高和土壤N2O的减排效果均较好。兼顾华北粮田N20减排和作物产量，小麦季推荐合理施氮量167-174kg·hm-2基追比1：1，添加DCD，土壤N2O总排放量为0-31kg·hm-2，籽粒产量6200kg·hm-2以上；玉米季推荐合理施氮量177-181kg·hm-2基追比2：3—1：2，添加DCD，土壤Nz0总排放量1．70kg·hm-2，籽粒产量9000kg·hm-2以上。 |
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| Bibliography: | SHU Xiao-xiao, WANG Yan-qun, LI Ying-ehun, PENG Zheng-ping, WEI Shan-shan, SHI Xin-li, ZHAO Yan-wei （1.College of Resources and Environmental Sciences/Key Laboratory for Farmland Eco-Environment of Hebei, Agricultural University of Hebei, Baoding 071001, China;2.Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China） wheat; maize; nitrogen fertilizer; different management methods; N20 emission; crop yield 12-1437/S Through the published literature analysis of wheat and maize field in North China, this study investigated the effects of different management methods of nitrogen（ N ） application rates, basal/topdressing ratios and N control measures on the soil N20 emission and crop yield. The results showed that reducing N application rates and adjusting basal/top dressing ratios under high N level could decrease soil N2O emissions. Besides, N application with nitrification inhibitor dicyandiamide （DCD） was an effective practice for wheat |
| ISSN: | 2095-6819 2095-6819 |