摘要
通过多年对稻田甲烷排放量的野外实验观测和对稻田甲烷产生与排放因子的研究，总结出减少稻田甲烷排放的主要方法，分析了各种减排方法的效果和经济效益，并利用层次分析法对各种减排方法做了综合的评价。现有的稻田甲烷减排方法主要有其它肥料代替传统的有机肥（植物秸秆、动物粪便）、种植低甲烷排放的水稻品种、灌水管理等。适合中国国情的方法主要有杂交稻替代常规稻，沼渣肥替代纯有机肥。沼渣肥替代有机肥的减排效果较好，社会效益和环境效益明显优于杂交稻替代常规稻，但杂交稻替代常规稻的经济效益很显著。
Based on the experiments and research on the generation and emission factors of methane carried out for several years, 3 promising methods for mitigation of methane emission from rice field were found. The effectiveness and economic benefits of each method for mitigation of methane emission from rice field were analyzed by using cost benefit analysis method AHP. At present, the major methods are using biogas pit residue to substitute fresh organic fertilizers, rice cultivar selection, and water regime. Using biogas pit residue to substitute fresh organic fertilizers and using the hybrid rice insted of conventional rice cultivars are suitable to China. The first method can mitigate methane emission significantly, and it’s social and environmental benefits are better than the second one. But the economic benefit of the second one is prominent.
出处
《中国农业气象》
CSCD
1997年第6期9-14,共6页
Chinese Journal of Agrometeorology
关键词
甲烷
排放
减排
杂交稻
沼渣
层次分析法
Methane
Emission
Mitigation
Hybrid rice
Biogas pit residues
AHP
