文章摘要
樊迪,李若林,马静,张广斌,徐华.太湖流域不同再生稻品种的温室气体排放强度[J].农业环境科学学报,2022,41(9):2082-2090.
太湖流域不同再生稻品种的温室气体排放强度
Greenhouse gas intensity from different cultivars of ratoon rice fields in Taihu Lake region, China
投稿时间:2022-03-04  
DOI:10.11654/jaes.2022-0219
中文关键词: 太湖流域  再生稻  温室气体排放强度  产量  水稻品种
英文关键词: Taihu Lake region  ratoon rice  greenhouse gas intensity  yield  rice cultivar
基金项目:江苏省碳达峰碳中和科技创新专项资金项目(BE2022311);国家自然科学基金项目(41877325,42177233);中国科学院青年创新促进会项目(2018349)
作者单位E-mail
樊迪 土壤与农业可持续发展国家重点实验室, 江苏常熟农田生态系统国家野外科学观测研究站, 中国科学院南京土壤研究所, 南京 210008
中国科学院大学, 北京 100049 
 
李若林 土壤与农业可持续发展国家重点实验室, 江苏常熟农田生态系统国家野外科学观测研究站, 中国科学院南京土壤研究所, 南京 210008
中国科学院大学, 北京 100049 
 
马静 土壤与农业可持续发展国家重点实验室, 江苏常熟农田生态系统国家野外科学观测研究站, 中国科学院南京土壤研究所, 南京 210008  
张广斌 土壤与农业可持续发展国家重点实验室, 江苏常熟农田生态系统国家野外科学观测研究站, 中国科学院南京土壤研究所, 南京 210008  
徐华 土壤与农业可持续发展国家重点实验室, 江苏常熟农田生态系统国家野外科学观测研究站, 中国科学院南京土壤研究所, 南京 210008 hxu@issas.ac.cn 
摘要点击次数: 725
全文下载次数: 705
中文摘要:
      为明确太湖流域种植再生稻的可行性及其对温室气体排放的影响,于2021年4—10月采用静态箱-气相色谱法观测了旱优73、甬优2640、丰两优香1号、两优6326和C两优华占5个品种再生稻的CH4和N2O排放通量以及产量。结果表明:稻季观测期内,CH4排放峰分别出现在中稻季分蘖期和抽穗前后以及再生季前期;两季CH4累积排放量为209~289 kg·hm-2,再生季占比为8.3%~23.0%,其中两优6326的值最高,显著高于旱优73、甬优2640和丰两优香1号(P<0.05)。N2O排放峰主要出现在肥料施用后和土壤水分发生剧烈变化时;两季N2O累积排放量为0.386~0.548 kg·hm-2,再生季占比为0.5%~2.4%,5个品种间N2O排放量无显著差异。不同处理两季水稻总产量为6.12~12.62 t·hm-2,再生季占比为23.8%~36.7%,其中甬优2640和丰两优香1号的两季总产量相对较高。不同处理的温室气体排放强度为0.50~1.35 t CO2 e·t-1,其中甬优2640最低,两优6326最高(P<0.05)。研究表明,甬优2640和丰两优香1号的两季总产量较高,且温室气体排放强度相对较低。
英文摘要:
      To clarify the feasibility of ratoon rice cultivation in the Taihu Lake region and its effect on greenhouse gas emissions, a field experiment was conducted from April to October in 2021, using the static chamber-gas chromatography technique and adopting five cultivars of ratoon rice[Hanyou 73(H73), Yongyou 2640(Y2640), Fengliangyouxiang 1(F1), C Liangyouhuazhan(CZ), and Liangyou 6326 (L6326)]. The results showed that the CH4 fluxes reached peak during the tillering and heading of main rice crop season and early ratoon season. Seasonal cumulative CH4 emissions ranged from 209 to 289 kg·hm-2, of which 8.3%~23.0% was attributed to the ratoon season. Total CH4 emission from L6326 was the highest, which was obviously higher than that from H73, Y2640, and F1(P<0.05). The N2O flux peaks were mainly measured during the periods of nitrogen fertilization and soil moisture drastic changes. The seasonal N2O emissions ranged from 0.386 to 0.548 kg·hm-2, with 0.5%~2.4% in ratoon season. There was no significant difference in N2O emissions among the five rice cultivars. Total rice yield was 6.12~12.62 t·hm-2, and the ratoon rice contributed 23.8%~36.7%. The yields of Y2640 and F1 were relatively higher than those of other three rice cultivars. As a whole, the greenhouse gas intensity ranged from 0.50 to 1.35 t CO2 e·t-1, with the lowest and highest values observed in Y2640 and L6326, respectively. Based on these findings, the Y2640 and F1 rice cultivars could be potentially planted in Taihu Lake region owing to their relatively higher yields and lower greenhouse gas intensity.
HTML    查看全文   查看/发表评论  下载PDF阅读器