耕作与秸秆还田方式对稻田N2O排放、水稻氮吸收及产量的影响

冯珺珩,黄金凤,刘天奇,曹凑贵,李成芳

Effects of tillage and straw returning methods on N2O emission from paddy fields, nitrogen uptake of rice plant and grain yield

Jun-Heng FENG,Jin-Feng HUANG,Tian-Qi LIU,Cou-Gui CAO,Cheng-Fang LI

表2 2016-2017年不同处理稻田土壤N2O累积排放量

Table 2 Seasonal cumulative N2O emissions under different treatments during rice growing seasons in 2016 and 2017 (kg hm-2)

处理 Treatment N2O累积排放量 2016 2017 翻耕+前季作物秸秆不还田 CTNS 0.22 ± 0.02 0.44±0.13 翻耕+前季作物秸秆全量还田 CTS 0.32 ± 0.05 0.57±0.02 免耕+前季作物秸秆不还田 NTNS 0.26 ± 0.02 0.61±0.18 免耕+前季作物秸秆全量还田 NTS 0.36 ± 0.05 0.69±0.12 ANOVA 耕作方式Tillage practices (T) * ** 秸秆管理Straw managements (S) * * T×S ns ns