| 长期免耕不同秸秆覆盖量对玉米产量及其稳定性的影响 |
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| 引用本文： | 徐欣,王笑影,鲍雪莲,王影,刘亚军,霍海南,何红波,解宏图.长期免耕不同秸秆覆盖量对玉米产量及其稳定性的影响[J].应用生态学报,2022,33(3):671-676. |
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| 作者姓名： | 徐欣 王笑影 鲍雪莲 王影 刘亚军 霍海南 何红波 解宏图 |
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| 作者单位： | 1.中国科学院沈阳应用生态研究所, 沈阳 110016;2.中国科学院大学, 北京 100049;3.中国气象局沈阳大气环境研究所, 沈阳 110166;4.辽宁省现代保护性耕作与生态农业重点实验室, 沈阳 110016;5.吉林省梨树县农业技术推广总站, 吉林梨树 136500 |
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| 基金项目： | 国家自然科学基金项目(41977048)资助。 |
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| 摘 要： | 阐明长期免耕不同秸秆覆盖量下玉米产量变化趋势及其稳定性差异,可为建立和评价长期保护性耕作模式、促进粮食持续生产提供理论支撑.本研究基于我国东北黑土区长期保护性耕作定位试验(始于2007年),以传统垄作(RT)为对照,分析了免耕无秸秆覆盖(NT0)、免耕33％秸秆覆盖(NT33)、免耕67％秸秆覆盖(NT67)和免耕10...
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| 关 键 词： | 免耕 秸秆覆盖 玉米产量 产量稳定性 |
| 收稿时间： | 2021-08-31 |
Effects of long-term no-tillage and stover mulching on maize yield and its stability. |
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| XU Xin,WANG Xiao-ying,BAO Xue-lian,WANG Ying,LIU Ya-jun,HUO Hai-nan,HE Hong-bo,XIE Hong-tu.Effects of long-term no-tillage and stover mulching on maize yield and its stability.[J].Chinese Journal of Applied Ecology,2022,33(3):671-676. |
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| Authors: | XU Xin WANG Xiao-ying BAO Xue-lian WANG Ying LIU Ya-jun HUO Hai-nan HE Hong-bo XIE Hong-tu |
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| Institution: | 1.Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;2.University of Chinese Academy of Sciences, Beijing 100049, China;3.Institute of Atmospheric Environment, China Meteorological Administration, Shen-yang 110166, China;4.Key Lab of Conservation Tillage and Ecological Agriculture of Liaoning Province, Shenyang 110016, China;5.Lishu Agricultural Technology Extension Station, Lishu 136500, Jilin, China |
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| Abstract: | Clarifying the differences of maize yield and its stability under long-term no-tillage with different stover mulching amounts can provide theoretical and technical supports for establishing and evaluating long-term conservation tillage pattern and promoting grain production. Based on a long-term conservation tillage field experiment in the mollisol area of Northeast China since 2007, we analyzed the interannual variation, variation coefficient and stability of maize yield during 2013 and 2019 across five treatments, i.e., no-tillage stover-free mulching (NT0), no-tillage with 33% stover mulching (NT33), no-tillage with 67% stover mulching (NT67) and no-tillage with 100% stover mulching (NT100), with the traditional ridge cropping (RT) as the control. The results showed that compared with RT, long-term no-tillage with stover mulching treatments could increase maize yield. NT100 had the highest increasing rate of 11.4%, followed by NT67 and NT0, with the increasing rate of 11.0% and 10.4%, respectively. Maize yield exhibited a nonlinear relationship with the amount of stover mulch. The variation coefficient of maize yield under multi-year no-tillage with different stover mulching could be sorted as NT67100330, and the yield sustainability index was NT67>NT0>NT100>RT>NT33, indicating that NT67 treatment could significantly reduce the interannual fluctuation of maize yield and had better sustainability of yield. No-tillage stover mulching significantly increased soil total carbon and total nitrogen contents, which were significantly positively correlated with maize yield. In conclusion, compared with traditional tillage, no-tillage stover mulching could increase maize yield and soil carbon and nitrogen contents. Appropriate stover mulching (NT67)had the potential to improve the stability and sustainability of maize yield. |
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| Keywords: | no tillage maize stover mulch maize yield yield stability |
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