| 邓丹丹,周友彬.奉节脐橙园土壤养分现状及综合肥力评价[J].中国南方果树,2025,54(4): |
| 奉节脐橙园土壤养分现状及综合肥力评价 |
| Analysis of Nutrient Status and evaluation of integrated fertility of Fengjie navel orange orchard |
| 投稿时间：2024-08-09 修订日期：2024-08-09 |
| DOI： |
| 中文关键词: 奉节脐橙 土壤养分 综合肥力指数（IFI） 模糊综合评判法 |
| 英文关键词:Fengjie navel orange soil nutrients integrated fertility index (IFI) fuzzy comprehensive assessment |
| 基金项目: |
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| 摘要点击次数: 191 |
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| 中文摘要: |
| 明确奉节脐橙园土壤养分丰缺状况、空间分布及综合肥力特征，可为脐橙园土壤肥力提升、合理施肥提供科学依据和政策支撑。为此，本研究采集了340个脐橙园土样，分析检测了土壤pH值、有机质、碱解氮、全氮、有效磷、速效钾6个指标，并采用模糊综合评价模型对土壤肥力指标进行数值化综合性评价，以期确定奉节脐橙园土壤综合肥力水平。结果表明，奉节脐橙园土壤pH值整体呈中性，碱解氮含量缺乏，其他养分含量适中。空间分布上，奉节脐橙园土壤pH和速效钾总体为南高北低，有机质沿长江向南北递增，而有效磷则沿长江向南北递降，奉节脐橙园土壤综合肥力指数平均值为0.526，综合肥力处于中等水平。主成分分析表明碱解氮、全氮、有机质和pH对土壤综合肥力的影响较大。综合而言，奉节脐橙园需注重有机肥和氮肥的施用，并开展测土配方施肥，以达到果园高产优质及土壤肥力提升的目的。 |
| 英文摘要: |
| To quantify the current status, classification, spatial distribution and integrated fertility of soil nutrients in Fengjie orange orchards will provide scientific basis and policy support for soil improvement and rational fertilization. Therefore, 340 soil samples from Fengjie navel orange and 6 parameters (soil pH value, organic matter (OM), total nitrogen (TN), alkali-hydrolytic nitrogen (AN), available phosphorus (AP), available potassium (AK)) were tested and classified; Then, the data was further used to evaluate the integrated soil fertility index (IFI) of Fengjie navel orange orchards by fuzzy comprehensive assessment model. The results showed that soil pH was neutral, the soil AN was overall insufficient, while the other soil parameters were in suitable levels. In terms of spatial distribution, soil pH and AK were generally higher in the south and lower in the north of Fengjie county; the OM increased along the Yangtze River, while AP decreased along the Yangtze River. The IFI average value of Fengjie navel orange orchard was 0.526. Principal component analysis (PCA) showed that AN, TN, OM and pH had greater effects on soil fertility. In summary, the application of organic fertilizer and nitrogen fertilizer (including soil testing and formula fertilization) should be addressed, so as to achieve the purposes of high yield, high quality and soil fertility improvement in Fengjie orchards. |
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