双季稻秸秆还田方式对土壤碳库和甲烷排放强度的影响

梁威, 李虎, 郑华斌, 王慰亲, 唐启源

Effects of Double Cropping Rice Straw Returning Method on Soil Organic Carbon Fixation and Methane Emission Intensity

Liang Wei, Li Hu, Zheng Huabin, Wang Weiqin, Tang Qiyuan

表5 不同秸秆还田方式对稻田温室效应的影响

Table 5 Effects of different straw returning methods on greenhouse effect in paddy field kg CO2 eq/hm2

处理 Treatment 2023 2024 综合温室效应GWP 温室气体排放强度GHGI 综合温室效应GWP 温室气体排放强度GHGI 早稻Early rice 晚稻Late rice 早稻Early rice 晚稻Late rice 早稻Early rice 晚稻Late rice 早稻Early rice 晚稻Late rice CK 3294.96ab 2629.20bc 0.45ab 0.32bc 3554.27c 2519.77b 0.53b 0.29b T1 2639.70b 2253.41c 0.34b 0.27c 3290.84c 2223.71b 0.46b 0.25b T2 2472.96b 2308.10c 0.33b 0.27c 2231.92d 2108.91b 0.30c 0.24b T3 3431.84a 4872.07ab 0.50ab 0.57ab 4765.96b 5462.85a 0.66a 0.61a T4 3190.34ab 5448.57a 0.60a 0.64a 5399.48a 5557.38a 0.81a 0.51a