| 重庆市涪陵区植烟土壤养分的适宜性评价及变异分析 |
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| 引用本文： | 周旭东, 韩天华, 施竹凤, 等. 金沙江流域植烟土壤肥力适宜性评价及养分时空变异特征[J]. 云南农业大学学报（自然科学）, 2023, 38(1): 158-165. DOI: 10.12101/j.issn.1004-390X(n).202205057 |
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| 作者姓名： | 周旭东 韩天华 施竹凤 张庆 贺彪 杨明英 裴卫华 杨佩文 |
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| 作者单位： | 1.云南农业大学 植物保护学院，云南 昆明 650201;2.云南省农业科学院 农业环境资源研究所，云南 昆明 650205;3.云南省烟草公司丽江市公司，云南 丽江 674100 |
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| 基金项目： | 云南省烟草公司科技计划项目(2020530000241019)。 |
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| 摘 要： | 目的明确丽江金沙江流域植烟土壤养分丰缺状况及变异特征，为植烟土壤科学高效施肥提供数据支撑。方法2017—2020年，对金沙江流域938个植烟土壤点跟踪采样，测定土壤pH以及有机质、水解性氮、有效磷、速效钾和水溶性氯含量等6项指标，采用主成分分析法和模糊隶属函数综合评价模型研究土壤肥力各指标时空变异特征，并对土壤肥力进行适宜性综合评价。结果金沙江流域5县(区)植烟区土壤pH值和有机质含量基本保持平稳且处于适宜范围；速效钾含量较为丰富且逐年增加；水解性氮和有效磷含量逐年增加后在2020年下降；水溶性氯含量逐年降低，且低于正常值。适宜性评价显示：玉龙县土壤肥力适宜性指数最高，华坪县最低，分别为0.64和0.51；金沙江流域整体土壤质量为Ⅱ级，适宜性指数为0.58。结论丽江金沙江流域植烟土壤整体质量较好，适合烤烟种植，但在生产上应注意土壤改良、合理轮作、科学有效施肥和严控化肥投入量。
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| 关 键 词： | 金沙江流域 植烟土壤 土壤肥力 适宜性 时空变异 |
| 收稿时间： | 2022-05-27 |
| 修稿时间： | 2023-02-01 |
Heavy metal pollution and soil quality assessment under different land uses in the red soil region,southern China |
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| Xudong ZHOU, Tianhua HAN, Zhufeng SHI, et al. Suitability Evaluation of Soil Fertility and Spatio-temporal Variation Characteristics of Nutrients for Tobacco Planting Soil in Jinsha River Basin[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY（Natural Science）, 2023, 38(1): 158-165. DOI: 10.12101/j.issn.1004-390X(n).202205057 |
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| Authors: | Xudong ZHOU Tianhua HAN Zhufeng SHI Qing ZHANG Biao HE Mingying YANG Weihua PEI Peiwen YANG |
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| Affiliation: | 1.College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China;2.Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, China;3.Lijiang Tobacco Company of Yunnan Province, Lijiang 674100, China |
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| Abstract: | PurposeTo clarify the nutrient abundance and deficiency status and variation characteristics of tobacco-planting soil in Jinsha River Basin of Lijiang, providing data support for scientific and efficient fertilization of tobacco-planting soil. MethodsFrom 2017 to 2020, 938 tobacco planting soil sites in Jinsha River Basin were tracked and collected to determine soil pH, and contents of organic matter, hydrolytic nitrogen, available phosphorus, available potassium and water soluble chlorine. Principal component analysis and fuzzy membership function comprehensive evaluation model were used to study the spatio-temporal variation characteristics of soil fertility indexes. The suitability of soil fertility was evaluated comprehensively. ResultsThe pH value and organic matter content of soil in tobacco-planting areas in five counties (districts) of Jinsha River Basin remained stable and in the appropriate range. The content of available potassium was abundant and increased year by year, while the contents of hydrolytic nitrogen and available phosphorus increased year by year and then decreased in 2020. Water soluble chlorine content decreased year by year and was lower than normal value. Suitability evaluation showed that Yulong County had the highest soil fertility suitability index (SFI) and Huaping County had the lowest SFI (0.64 and 0.51, respectively). The overall soil quality in Jinsha River Basin was Grade Ⅱ, and the SFI was 0.58. ConclusionThe overall quality of tobacco-planting soil in Jinsha River Basin of Lijiang is good, which is suitable for flue-cured tobacco planting. However, attention should be paid to soil quality improvement, reasonable crop rotation, scientific and effective fertilization and strict control of fertilizer input. |
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| Keywords: | Jinsha River Basin tobacco-planting soil soil fertility suitability spatio-temporal variation |
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