| 生物炭与氮肥施用对双季稻田温室气体排放的影响 |
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| 引用本文： | 汪勇,吕茹洁,黎星,胡水秀,商庆银.生物炭与氮肥施用对双季稻田温室气体排放的影响[J].中国稻米,2021,27(1):20-26. |
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| 作者姓名： | 汪勇 吕茹洁 黎星 胡水秀 商庆银 |
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| 作者单位： | 江西农业大学 双季稻现代化生产协同创新中心/作物生理生态与遗传育种教育部重点实验室/江西省作物生理生态与遗传育种重点实验室/南方粮油作物协同创新中心,南昌330045 |
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| 基金项目： | 国家自然科学基金（31601833）;国家重点研发计划（2017YFD0301605） |
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| 摘 要： | 以我国南方双季稻田为研究对象,旨在探究生物炭与氮肥施用对稻田温室气体排放的影响.试验共设置5个处理,分别为不施氮肥不施生物炭(N0B0)、单施40 t/hm2生物炭(N0B2)、单施氮肥(N1B0)、氮肥配施20 t/hm2生物炭(N1B1)、氮肥配施40 t/hm2生物炭(N1B2).采用静态暗箱-气象色谱法连续监测...
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| 关 键 词： | 生物炭 氮肥 双季稻 温室气体 |
| 收稿时间： | 2020-10-20 |
Effects of Biochar and Nitrogen Incorporation on Greenhouse Gas Emissions in Double Rice-cropping System |
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| Yong WANG,Rujie Lü,Xing LI,Shuixiu HU,Qingyin SHANG.Effects of Biochar and Nitrogen Incorporation on Greenhouse Gas Emissions in Double Rice-cropping System[J].China Rice,2021,27(1):20-26. |
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| Authors: | Yong WANG Rujie LÜ Xing LI Shuixiu HU Qingyin SHANG |
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| Institution: | Jiangxi Key Laboratory of Crop Physiology, Ecology and Genetic Breeding / Key laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education / Collaborative Innovation Center for the Modernization Production of Double Cropping Rice / Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Jiangxi Agricultural University, Nanchang 330045, China |
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| Abstract: | To investigate the effects of nitrogen （N） and biochar amendment on greenhouse gas emissions in double rice-cropping system. Five treatments were conducted: N0B0, no N fertilization without biochar amendment; N0B2, no N fertilization with 40 t/hm2 biochar; N1B0, N fertilization without biochar amendment; N1B1, N fertilization with 20 t/hm2 biochar; N1B2, N fertilization with 40 t/hm2 biochar. Methane （CH4） and nitrous oxide （N2O） emissions were measured using the static chamber-gas chromatography method during rice-growing seasons, and analyzed the effects of biochar and nitrogen fertilizer amendment on CH4 and N2O emissions, global warming potential, annual yield and greenhouse gas intensity. The results indicated that biochar amendment significantly decreased CH4 emission in treatments with or without N fertilizer. Compared with N1B0 treatment, CH4 emissions of N1B1 and N1B2 treatments were decreased by 32.43% and 41.1%, respectively. Biochar amendment significantly increased the cumulative N2O emissions under nitrogen application. Compared with N1B0 treatment, the cumulative emissions of N1B1 and N1B2 treatments were significantly increased by 109.93% and 106.54%, respectively. The global warming potential of each treatment can be ordered as: N1B0> N0B0> N0B2> N1B1> N1B2. After the late rice harvested, the soil pH value, total carbon and C/N showed an increasing trend with the increase of biochar application, and N1B2 treatment increased significantly compared to N1B0. In summary, compared with single application of nitrogen fertilizer and single application of biochar, combined application of biochar and nitrogen fertilizer is more conducive to carbon sequestration and emission reduction in the double-season paddy field in southern China. N1B2 treatment has the best effect among all the treatments. The study provided some references for mitigating greenhouse effect by incorporating biochar into paddy fields. |
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| Keywords: | biochar N fertilizer double-season rice greenhouse gas emission |
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