重庆渝东南烟区土壤养分丰缺评价及施肥区划
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S158.5

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中国烟草总公司重点研发项目(武陵秦巴烟区粮经烟融合根际调控技术研究与应用)和大学生创新创业训练计划项目(S202410635158)资助。


Evaluation of Soil Nutrient Status and Fertilization Zoning of Tobacco-growing Region in Southeastern Chongqing
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    摘要:

    为全面掌握渝东南烟区土壤养分现状,2021—2022年在渝东南5个区县共采集1 421个土壤样品,测定了土壤养分含量,并与2012年数据进行比较,明确了土壤养分演变趋势,并给出了合理的施肥方案。结果显示:与2012年相比,2022年渝东南烟区土壤pH小幅上升,有机质含量小幅下降,有效磷、速效钾含量大幅上升。2022年渝东南烟区pH较低和极低的土壤占比36.88%;有机质偏低的土壤占比23.08%;碱解氮、有效磷、速效钾、交换性钙和镁适宜的土壤分别占比74.17%、20.97%、11.89%、44.19%和30.96%。总体上,渝东南烟区土壤酸化较为严重,土壤有机质较为缺乏,碱解氮供应能力良好,有效磷和速效钾整体偏高,土壤有效锰、锌、钼、硫和硼丰富,而土壤交换性钙、交换性镁、有效铁和有效铜缺乏占比较大,且各元素缺乏与过量并存。研究区应根据各区域施肥区划图,科学合理施肥,以实现土壤保育与烤烟生产的可持续发展。

    Abstract:

    In order to fully understand the current status of soil nutrients in the tobacco-growing areas in southeastern Chongqing, a total of 1 421 soil samples were collected in five districts and counties in southeastern Chongqing from 2021 to 2022, and soil nutrient contents were measured and compared with those in 2012 to clarify their change trend and give a reasonable fertilization plan. The results showed that compared with 2012, soil pH increased slightly, organic matter content decreased slightly, and the contents of available phosphorus and potassium increased significantly in 2022. At present, soil with acidic pH accounted for 36.88%, soil with low organic matter accounted for 23.08%, and soil with suitable alkaline nitrogen, available phosphorus and potassium, exchangeable calcium and magnesium accounted for 74.17%, 20.97%, 11.89%, 44.19% and 30.96%, respectively. In general, soil acidification is serious, soil organic matter is relatively insufficient, alkaline nitrogen is suitable, the available phosphorus and potassium are generally high, available manganese, zinc, molybdenum, sulfur and boron are rich, while exchangeable calcium and magnesium, available iron and copper are insufficient in a large proportion, and the deficiency and excess of each element coexist. Therefore, the tobacco-growing areas in southeastern Chongqing should adopt measures according to the current status of soil nutrients and the fertilizer zoning maps, applying fertilizers scientifically and rationally to achieve the sustainability of soil and flue-cured tobacco production.

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宋曼宁,田野,冷雨轩,周鑫斌,韦育新,李承荣,冉茂.重庆渝东南烟区土壤养分丰缺评价及施肥区划[J].土壤,2025,57(5):986-994. SONG Manning, TIAN Ye, LENG Yuxuan, ZHOU Xinbin, WEI Yuxin, LI Chengrong, RAN Mao. Evaluation of Soil Nutrient Status and Fertilization Zoning of Tobacco-growing Region in Southeastern Chongqing[J]. Soils,2025,57(5):986-994

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  • 收稿日期:2024-10-12
  • 最后修改日期:2024-12-28
  • 录用日期:2024-12-30
  • 在线发布日期: 2025-11-24
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