土壤2025，Vol.57Issue(2)：461-468,8.DOI:10.13758/j.cnki.tr.2025.02.025
太湖流域蓄留再生稻的氨挥发特征
Characteristics of Ammonia Volatilization from Ratooning Rice in Taihu Lake Region of China
摘要
Abstract
In this study,a field experiment was conducted to reveal the characteristics of ammonia emission from traditional rice-wheat rotation(RW)and ratoon rice(RR)systems in the Taihu Lake watershed.The results showed that cumulative ammonia volatilization of RR was 74.3 kg/hm2,accounting for 17.9%of total nitrogen applied.The main periods of ammonia volatilization loss were tillering fertilizer stage and regenerated tillering fertilizer stage,accounting for 31.2%and 27.0%of the total nitrogen loss,respectively.The yield,ammonia emission intensity and partial factor productivity from applied nitrogen of RR were 14.10 t/hm2,5.29 kg/t and 33.9 kg/kg.Compared with RW,ammonia volatilization accumulation,yield and nitrogen partial factor productivity of RR increased by 40.7%,43.0%and 51.6%,respectively.In conclusion,compared to RW,RR increases ammonia emission but produces higher grain yield while with equivalent ammonia emission intensity,which suggest a great potential for ammonia volatilization reduction of RR in Taihu Lake Basin.关键词
再生稻/氨挥发/太湖流域/氮肥施用/水稻产量Key words
Ratoon rice/Ammonia volatilization/Taihu Lake region/Nitrogen fertilization/Rice yield分类
农业科技引用本文复制引用
柳佳蓉,王潇洁,李若林,王世辰,马静,张广斌,徐华..太湖流域蓄留再生稻的氨挥发特征[J].土壤,2025,57(2):461-468,8.基金项目
江苏省科技厅科技创新专项资金项目(BE2022308)和国家自然科学基金项目(42177233,42277227)资助. （BE2022308）
