| 水土保持耕作对黑土玉米氮素利用与温室气体排放影响 |
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| 引用本文： | 齐智娟,李骜,张忠学,余佩哲,尹致皓,宋芳.水土保持耕作对黑土玉米氮素利用与温室气体排放影响[J].农业机械学报,2023,54(9):365-373. |
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| 作者姓名： | 齐智娟 李骜 张忠学 余佩哲 尹致皓 宋芳 |
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| 作者单位： | 东北农业大学 |
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| 基金项目： | 国家重点研发计划项目（2021YFD1500802）和东农学者计划学术骨干项目（21XG18） |
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| 摘 要： | 为探明不同水土保持耕作技术对东北黑土坡耕地玉米氮素利用和温室气体排放的影响，以大田试验为基础，设置7个耕作处理：等高耕作(Transverse slope planting, TP)、垄向区田(Ridge to the district field, RF)、深松耕(Subsoiling tillage, SF)、等高耕作+深松耕(Transverse slope planting+subsoiling tillage, TP-S)、垄向区田+深松耕(Ridge to the district field+subsoiling tillage, RF-S)、等高耕作+垄向区田(Transverse slope planting+ridge to the district field, TP-R)、常规耕作(Down-slope cultivation, CK),探究水土保持耕作技术对东北黑土坡耕地土壤养分状况、温室气体排放、氮素吸收利用和产量的影响。结果表明：在玉米全生育期内，水土保持耕作处理显著提高了玉米产量、器官氮素转运率以及氮肥利用率，部分水土保持耕作措施也可以显著降低N
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| 关 键 词： | 水土保持耕作 玉米 氮素利用率 N2O 作物产量 |
| 收稿时间： | 2023/5/12 0:00:00 |
Effects of Soil and Water Conservation Tillage on Nitrogen Utilization and Greenhouse Gas Emissions of Maize in Black Soil |
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| QI Zhijuan,LI Ao,ZHANG Zhongxue,YU Peizhe,YIN Zhihao,SONG Fang.Effects of Soil and Water Conservation Tillage on Nitrogen Utilization and Greenhouse Gas Emissions of Maize in Black Soil[J].Transactions of the Chinese Society of Agricultural Machinery,2023,54(9):365-373. |
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| Authors: | QI Zhijuan LI Ao ZHANG Zhongxue YU Peizhe YIN Zhihao SONG Fang |
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| Institution: | Northeast Agricultural University |
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| Abstract: | In order to explore the effects of different soil and water conservation tillage techniques on nitrogen utilization and greenhouse gas emissions in sloping farmland of black soil in Northeast China, a field experiment was conducted. Seven tillage treatments were set up: transverse slope planting ( TP ), ridge to the district field ( RF ), subsoiling tillage ( SF ), transverse slope planting + subsoiling tillage (TP-S), ridge to the district field + subsoiling tillage (RF-S), transverse slope planting + ridge to the district field (TP-R), and down-slope cultivation (CK). Explore the effects of soil and water conservation tillage techniques on soil nutrient status, greenhouse gas emission, nitrogen absorption and utilization, and yield of black soil slope farmland in Northeast China. The results showed that during the whole growth period of maize, soil and water conservation tillage treatment significantly increased maize yield, organ nitrogen transport rate and nitrogen use efficiency, and some soil and water conservation tillage measures could also significantly reduce N2O and CO2 emissions. Among them, at the maturity stage of maize, the plant yield of soil and water conservation tillage measures were increased by 3.39%~26.43% compared with that of CK treatment, and TP-S treatment had the highest improvement effect. For nitrogen use efficiency, soil and water conservation tillage technology were increased by 25.23% (RF treatment ) ~ 76.98% (TP-S treatment) compared with CK treatment, and the improvement effect was significant. For CO2 emissions, except for SF treatment, the remaining soil and water conservation tillage treatments were significantly lower than that of CK treatment. However, for N2O emissions, TP treatment, TP-S treatment and TP-R treatment were significantly lower than that of CK, while SF treatment, RF treatment and RF-S treatment were significantly higher than that of CK treatment. Therefore, it was suggested that the local maize planting should adopt the soil and water conservation tillage technology of transverse slope planting+subsoiling tillage. |
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| Keywords: | soil and water conservation tillage maize nitrogen use efficiency N2O crop yield |
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