我国柑橘园土壤肥力现状的整合分析
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(福建农林大学资源与环境学院 /国际镁营养研究所,福建 福州 350002)

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朱燕君(1997-),硕士研究生,从事柑橘养分管理与土南柑橘园土壤有机质、碱解氮含量不足,中微壤健康研究,E-mail:zhu2898156527@163.com。张天赐(1999-),量元素(钙、铁除外)含量普遍不足。福建平和硕士研究生,从事土壤酸化调控研究,E-mail:ztcantil@163.com。

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Integrated analysis of soil fertility status in citrus orchards in China
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(College of Resources and Environment/InternationalMagnesiumInstitute,Fujian Agriculture and ForestryUniversity,Fuzhou Fujian350002)

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    摘要:

    为明确我国柑橘主产区土壤肥力现状,探寻影响柑橘生长的土壤养分限制因子,为柑橘养分管理提供重要参考依据,收集公开发表柑橘园土壤养分文献并对其进行整合分析,分析土壤养分含量及丰缺状况,并开展土壤综合肥力指数评价。结果表明:我国柑橘园土壤 pH平均为 5.53,有机质含量平均为 17.6 g/kg,碱解氮、有效磷和速效钾含量平均分别为 92.3、60.1和 162mg/kg,交换性钙和交换性镁含量平均分别为 1294和 161mg/kg,有效铁、锰、铜、锌、硼和钼含量平均分别为58.3、39.5、2.97、3.54、0.46和 0.29mg/kg。56.0%的橘园土壤pH<5.5,51.2%的橘园土壤交换性钙处于缺乏及以下水平,38.5%的橘园土壤交换性镁处于中等以下水平,63.6%的橘园土壤有效硼含量处于缺乏水平,50%以上的橘园土壤有机质、有效磷、速效钾和微量元素含量(有效硼除外)处于中等以上水平。我国柑橘园土壤综合肥力指数平均为 0.52,鄂西—湘西柑橘优势区土壤综合肥力指数为0.56,显著高于浙—闽—粤(0.51)和赣南—湘南—桂北(0.47)柑橘优势区;赣南—湘南—桂北显著低于长江上中游(0.53)柑橘优势区,不同柑橘优势区 7.14%~32.3%的柑橘园土壤综合肥力指数在中等以下水平。我国柑橘园土壤有效磷、速效钾和微量元素含量(有效硼除外)处于中等偏上水平,橘园土壤肥力潜在限制因子主要是土壤酸化,碱解氮、交换性钙和有效硼含量低。因此,在柑橘生产中,应注意添加碱性肥料或石灰改善土壤酸化,通过增施有机肥,优化氮肥、钙肥和硼肥管理,缓解土壤缺氮、缺钙以及缺硼问题。不同柑橘优势区要因地制宜,结合相应的农事管理措施,提高柑橘园土壤肥力,促进柑橘提质增效,从而实现柑橘产业可持续发展。

    Abstract:

    The aimed to elucidate the current status of soil fertility in the main citrus-producing regions ofChina,explore the soil limiting factorsthat restrict citrusgrowth,and provide valuable insights for citrus nutrient management. To achievethis,the published literature on soil nutrients in citrus orchards were collected toperformed integratedanalysis,examined soil nutrient content and abundancestatus,and conducted a comprehensive soil fertility evaluation. The results showed significant insights into the soil conditions of citrus orchards across China. The averagesoil pH,organicmatter,availablenitrogen,availablephosphorus,availablepotassium,exchangeablecalcium,exchangeablemagnesium,availableiron,availablemanganese,availablecopper,availablezinc,available boron and available molybdenum were recorded as5.53,17.6g/kg,92.3mg/kg,60.1mg/kg,162mg/kg,1294mg/kg,161mg/kg,58.3mg/kg,39.5mg/kg,2.97mg/kg,3.54 mg/kg,0.46 mg/kg and 0.29mg/kg,respectively. Soil pH in 56.0% of the orchards was below 5.5.Moreover,deficiencies in exchangeablecalcium,exchangeable magnesium and available boron wereobserved in51.2%,38.5% and 63.6% oforchards,respectively. Incontrast,more than 50% of the orchards showedsatisfactory(medium orhigh)levels of soilorganicmatter,availablephosphorus,availablepotassium,and trace elements except for availableboron. The average soil integrated fertility index(IFI)of citrus orchards in China was 0.52. The IFI in western Hubei-Xiangxi was0.56,which was significantly higher than those in Zhejiang-Fujian-Guangdong(0.51)and Gannan -Xiangnan-Guibei(0.47). The IFI of the Gannan-Xiangnan-Guibei area was substantially lower than that in the upper and middle reaches of the YangtzeRiver(0.53). The IFI below medium class in different main producing areas was 7.14%-32.3%. The soilavailablephosphorus,availablepotassium,and microelementconcentrations(except availableboron)in citrus orchards of China were at the middle orhigh level. The results showed low soilpH,insufficient availablenitrogen,and deficiencies in exchangeable calcium and available boron were the potential limiting factorsin citrus orchards. To address thesechallenges, focusing onsoil management strategies should be pivotal. Forexample,alkaline fertilizers or lime application could mitigate soilacidity,while increasing organic fertilizer application andoptimizingnitrogen,calcium,and boron fertilizer could address nutrient deficiencies.Hence,citrus cultivation in different regions should be adapted to local conditions and complemented with agricultural management measures.This approach may improve soil fertility in citrusorchards,promotecitrus quality andefficiency,and achieve sustainable development of the citrus industry.

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朱燕君,张天赐,程金,张江周.我国柑橘园土壤肥力现状的整合分析[J].中国土壤与肥料,2024,(7):19-27.

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  • 在线发布日期: 2024-09-30
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