| 西乡县茶园土壤养分及矿质元素特征分析与评价 |
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| 引用本文： | 周杰,方甜甜,王海燕,李文,闫满朝,余有本.西乡县茶园土壤养分及矿质元素特征分析与评价[J].安徽农业大学学报,2023,50(5):862-868. |
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| 作者姓名： | 周杰 方甜甜 王海燕 李文 闫满朝 余有本 |
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| 作者单位： | 西北农林科技大学园艺学院，杨凌 712100;陕西省林业科学院，西安 710082;西乡县茶叶局，西乡 723500 |
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| 基金项目： | 国家现代农业产业技术体系（CARS-19）, 陕西省茶叶产业技术体系（SNTX-07）和西北农林科技大学试验示范站（基地）科技创新与成果转化项目（TGZX2020-34）共同资助。 |
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| 摘 要： | 为了全面掌握西乡县茶园土壤的养分及环境质量基本状况，采集了西乡县代表性茶园土壤23份，测定了土壤养分和22种元素含量，依据相关土壤环境质量标准，评价了茶园土壤养分及其环境质量，并利用GIS克里金插值法分析了茶园土壤元素的分布情况。结果表明：研究区域茶园土壤pH为4.89(4.10～5.75)，有机质为27.71(13.23～59.42)g·kg-1、全氮为1.39(0.74～2.02)g·kg-1；速效氮为62.85(18.70～212.99)mg·kg-1，有效磷为46.39(0.81～163.00)mg·kg-1，速效钾为115.18(50.53～365.00)mg·kg-1，有效镁为404.96(94.41～870.52)m g·kg-1。仅有17%的茶园土壤主要营养诊断指标达到优质高效高产茶园的养分要求。土壤样品内梅罗综合污染指数均值为0.67，土壤环境质量整体处于安全级别，个别茶园土壤的Ni、Cr、Cu和Cd含量略高于风险筛选值。土壤中22种元素...
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| 关 键 词： | 西乡县 茶园 土壤养分 元素空间分布 重金属污染评价 |
Analysis and evaluation of soil nutrients and mineral elements characteristics of tea plantations in Xixiang County |
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| ZHOU Jie,FANG Tiantian,WANG Haiyan,LI Wen,YAN Manzhao,YU Youben.Analysis and evaluation of soil nutrients and mineral elements characteristics of tea plantations in Xixiang County[J].Journal of Anhui Agricultural University,2023,50(5):862-868. |
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| Authors: | ZHOU Jie FANG Tiantian WANG Haiyan LI Wen YAN Manzhao YU Youben |
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| Abstract: | To fully grasp the basic conditions of soil nutrients and environmental quality of tea plantations in Xixiang County, 23 soil samples were collected from the representative tea plantations, soil nutrients and 22 elements contents were detected, and the nutrients and soil environmental quality in tea plantations of Xixiang County were evaluated according to the relevant soil environmental quality standards. The Kriging spatial interpolation method was used to analyze the distribution of soil elements of tea plantations. The results showed that: the mean value of pH, organic matter, and total nitrogen was 4.89 (4.10 - 5.75), 27.71 (13.23 - 59.42) g·kg-1, 1.39 (0.74 - 2.02) g·kg-1, separately; the available nitrogen (N), phosphorus (P), potassium (K) and magnesium (Mg) were 62.85 (18.70 - 212.99) mg·kg-1, 46.39 (0.81 - 163.00) mg·kg-1, 115.18 (50.53 - 365.00) mg·kg-1 and 404.96 (94.41 - 870.52) mg·kg-1 in soil samples of tea plantations, respectively. Only 17% of soil samples in the main nutritional diagnostic indicators meet the nutrient requirements of high-quality, high-efficiency, and high-yield tea plantations. The mean value of the Nemerow multi-factor index was 0.67 for all the samples, which suggested that the overall soil environmental quality was at a safe level for Xixiang tea plantations. While, the niccolum (Ni), chromium (Cr), cuprum (Cu), and cadmium (Cd) contents in individual sample were slightly higher than the risk screening values. The spatial distribution of 22 elements was extremely uneven in the tea plantations, and soil elements had different enrichment features in different areas of Xixiang County. The results of this study can provide a theoretical basis for nutrient management, tea plantations construction, tea quality and safety improvement of Xixiang County. |
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| Keywords: | Xixiang County tea plantations soil nutrients spatial distribution of elements assessment of heavy metal pollution evaluation |
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