紫金县茶园土壤养分状况分析与评价
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(广东省科学院南繁种业研究所/茶营养与健康研究中心,广东 广州 510316)

作者简介:

陈迪文(1983-),副研究员,博士,主要从事植物营养与新型肥料研究。E-mail:chendiwen@126.com。

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基金项目:国家重点研发计划(2020YFD1000600);广东省科学院百名青年人才培养专项(2019GDASYL-0104012);清远市科技计划项目(2020KJJH033)。


Analysis and evaluation of soil nutrient status in tea plantation of Zijin county
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(Institute of Nanfan & Seed Industry,Guangdong Academy of Sciences / Tea Nutrition and Health Research Center,Guangzhou Guangdong 510316)

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    摘要:

    通过调查分析广东省紫金县不同茶园土壤养分状况,为茶园土壤施肥管理及茶叶提质增效提供科学依据。对紫金县9个产茶乡镇的不同茶园79 个土壤和67个茶青进行了取样,分别采集茶园0~20 cm土壤和一芽二叶的茶青样品。检测土壤pH、有机质、全N、有效P、速效K、有效Ca、有效Mg、有效S含量及微量元素Cu、Fe、Zn、Mn和B有效态含量等土壤养分指标,同时利用高效液相色谱系统定量测定茶青中的氨基酸和茶多酚含量。结果表明:紫金县茶园土壤全部呈酸性,pH值平均为4.84,变异系数为12.94%;有机质含量整体较高,平均为22.23 g/kg,

    Abstract:

    The soil nutrient status of different tea gardens were investigated and analyzed in Zijin county,Guangdong province to provide scientific basis for the fertilization management and the improvement of tea quality.79 soils (0~20 cm) and 67 “one bud and two leaf” fresh tea samples were taken from nine tea producing villages in Zijin county.The soil pH,the contens of organic matter,total N,available P,available K,available Ca,available Mg,available S,and the contens of trace elements such as Cu,Fe,Zn,Mn and B in the available states were measured,and the contents of amino acids and tea polyphenols in fresh tea were quantitatively determined by high performance liquid chromatography.The results showed that all the soils in Zijin county were acid,with an average pH of 4.84 and a coefficient of variation of 12.94%;the organic matter content was relatively high,with an average of 22.23 g/kg and a coefficient of variation of 47.44%;the mean values of total N and available P were 1.44 g/kg and 30.36 mg/kg,and most was at the middle and top level,and the coefficient of variation was 36.66% and 112.11%,respectively;the average content of available K was 114.10 mg/kg,and 44.30% of the tea garden soil was lower than the critical value;the available Ca and S of the middle and micro elements were relatively rich,and the content of available Mg was medium,of which 37.97% of the soil was lower than the critical value;the content of available Mn and Fe was rich,and there were no samples lower than the critical value;the available Zn and B contents were medium,and 10.13% and 15.19% of soil samples were lower than the critical value;the available Cu was seriously deficient,50.63% of soil samples were lower than the critical value,and other samples were moderate.There was a significantly positive correlation between the comprehensive score of soil nutrients and tea quality indicators such as tea polyphenols and amino acids.As a whole,the soil nutrients of tea gardens in Zijin county were at the upper-middle level,with uneven spatial distribution and great differences.It is suggested to apply K,Mg,Cu and B fertilizer,and in some tea gardens supplement of organic matter should be paid attention to and organic fertilizer application should be increased.

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陈迪文,周文灵,李继虎,李爽,吴启华,沈大春,凌秋平,黄莹,敖俊华.紫金县茶园土壤养分状况分析与评价[J].中国土壤与肥料,2022,(8):23-30.

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  • 收稿日期:2021-05-21
  • 最后修改日期:
  • 录用日期:2021-06-12
  • 在线发布日期: 2022-10-10
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