| 长期连续秸秆还田和生物质炭施用对稻田N2O排放的影响 |
| |
| 引用本文： | 靳鹏辉,陈哲,王慧,徐乔,胡天龙,周蓉,蔺兴武,刘琦,谢祖彬.长期连续秸秆还田和生物质炭施用对稻田N2O排放的影响[J].土壤,2023,55(5):964-973. |
| |
| 作者姓名： | 靳鹏辉 陈哲 王慧 徐乔 胡天龙 周蓉 蔺兴武 刘琦 谢祖彬 |
| |
| 作者单位： | 土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所,土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所,土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所,扬州大学,土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所,土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所,土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所,南京林业大学,土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所 |
| |
| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目），江苏省农业科技自主创新资金项目 |
| |
| 摘 要： | 为了评估麦季多年连续秸秆还田和生物质炭施用对稻麦轮作系统下稻田N2O排放的影响，于2010年麦季开始开展了为期11 a的麦季秸秆还田和生物质炭施用定位试验。试验共包括5个处理：无玉米秸秆还田和生物质炭施用(CK);6 t/(hm2·a)玉米秸秆还田(CS);2.4 t/(hm2·a)生物质炭施用(BC1);6 t/(hm2·a)生物质炭施用(BC2)和12 t/(hm2·a)生物质炭施用(BC3)。结果表明，BC2和BC3处理较CK均显著提高了土壤碱解氮、有效磷、速效钾、易氧化碳、可溶性有机氮和土壤微生物生物量氮含量。CS、BC1和BC2处理水稻生长季N2O总排放量与CK没有显著差异，但是BC3处理的N2O总排放量比CK提高了245.31%，并显著高于其他处理。BC3处理的N2O总排放量和施氮肥后N2O排放高峰期的累积排放量分别比CK提高了3.84 kg/hm2和3.3...
|
| 关 键 词： | N2O 生物质炭 秸秆还田 长期连续 稻田 |
| 收稿时间： | 2022/11/29 0:00:00 |
| 修稿时间： | 2023/2/5 0:00:00 |
Effects of Long-term Continuous Straw Incorporation and Biochar Application on N2O Emission from Paddy Field |
| |
| JING Penghui,CHEN Zhe,WANG Hui,XU Qiao,HU Tianlong,ZHOU Rong,LIN Xingwu,LIU Qi,XIE Zubin.Effects of Long-term Continuous Straw Incorporation and Biochar Application on N2O Emission from Paddy Field[J].Soils,2023,55(5):964-973. |
| |
| Authors: | JING Penghui CHEN Zhe WANG Hui XU Qiao HU Tianlong ZHOU Rong LIN Xingwu LIU Qi XIE Zubin |
| |
| Institution: | State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Yangzhou University,State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing Forestry University,State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences |
| |
| Abstract: | In order to evaluate the effects of long-term continuous straw incorporation and biochar application in wheat season on N2O emission from a paddy field under rice-wheat rotation system, an 11-year experiment of continuous straw incorporation and biochar application in wheat season was conducted in 2010. The experiment included five treatments: no maize straw incorporation and biochar application (CK); 6 t/(hm2·yr) maize straw incorporation (CS); 2.4 t/(hm2·yr) biochar application (BC1); 6 t/(hm2·yr) biochar application (BC2) and 12 t/(hm2·yr) biochar application (BC3). The results showed that BC2 and BC3 treatments significantly improved soil properties such as alkaline hydrolysis nitrogen (AN), available phosphorus (AP), available potassium (AK), readily oxidizable carbon (ROC), dissolvable organic nitrogen (DON) and soil microbial biomass nitrogen (SMBN). CS, BC1 and BC2 treatments had no significant effect on the seasonal cumulative N2O emission from paddy soil, while the seasonal cumulative N2O emission of BC3 treatment increased by 245.31% compared to the control. The seasonal cumulative N2O emission and the peak period cumulative emission after nitrogen application of BC3 treatment were increased by 3.84 kg/hm2 and 3.36 kg/hm2, respectively, compared to the control. The promoting effect of BC3 treatment on soil N2O emission was mainly in the peak period of N2O emission after nitrogen fertilizer application. Compared to the control, BC3 treatment significantly increased soil cation exchange capacity (CEC), soil microbial biomass carbon (SMBC) and SMBN by 20.35%, 26.13% and 49.96%, respectively. The cumulative emissions at the peak period of N2O emissions caused by re-flooding and panicle fertilizer application accounted for 27.66 - 32.83% of the seasonal cumulative emissions, of which BC3 treatment having the highest proportion. The results indicated that the increase of soil CEC content increased under long-term continuous application of biochar the retention of soil NH4+, promoted the soil nitrification process, and interval prolongation between panicle fertilizer and re-flooding might effectively reduce N2O emissions from paddy fields. |
| |
| Keywords: | N2O biochar straw incorporation long-term continuous paddy fields |
|
| 点击此处可从《土壤》浏览原始摘要信息 |
| 点击此处可从《土壤》下载免费的PDF全文 |
|
