水城茶园硒的地球化学特征及富硒茶开发探讨
Selenium Biogeochemistry and Development of Selenium Rich Tea in Shuicheng Tea Plantation
查看参考文献46篇
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文摘
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富硒资源弥足珍贵,利用富硒土壤资源发展富硒功能农业是实施乡村振兴战略的新途径。贵州水城区地处高硒地质背景区,为了高效开发利用当地富硒资源,开发生产富硒农产品,本项研究针对水城区富硒区茶园,进行了硒的生物地球化学研究。结果表明,茶园出露二叠系峨眉山玄武岩、龙潭组煤系地层,硒含量分别为0.267±0.155 mg/kg、1.193±2.698 mg/kg,其中龙潭组石煤硒含量最高,高达11.499 mg/kg,是典型的富硒岩层,为茶园富硒土壤的形成提供了充足的地质来源。茶园土壤总硒含量为0.547~4.954 mg/kg,平均值1.682±0.953 mg/kg,50%的茶园土壤硒含量在1~ 2 mg/kg范围内,为二级富硒土壤。土壤硒含量受其形成母质的制约,与有机碳含量呈正相关性(r = 0.27) 。土壤有效硒平均含量为0.139±0.045 mg/kg,平均占总硒的8.31%,与pH关系密切(r = 0.69) 。茶叶硒含量为0.006~ 0.196 mg/kg,平均值为0.081±0.049 mg/kg,未达到富硒茶的国家标准。为提升水城茶叶的硒含量,从而达到国家富硒茶的标准,建议采取以下农艺措施: 1)改良茶园土壤提升土壤pH值,以便提高土壤中硒的生物利用率;2)施外源硒肥进行硒生物强化;3)改换种植高积累硒茶叶品种。 |
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其他语种文摘
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Selenium (Se)-rich resources are very precious, and the development and use in Se-riched functional agriculture is a novel way to revitalize the countryside. Shuicheng is located in the high Se geological background area in Guizhou Province. This study characterized Se biogeochemistry for the tea plantation in the high Se-rich area in Shuicheng District to efficiently exploit local Se-rich resources for developing and producing Se-rich agricultural products. The studys results reveal that the average Se concentrations in rocks of Permian Emeishan basalt and Longtan Formation coal bearing strata were respectively 0.267±0.155 mg/kg and 1.193±2.698 mg/kg. The stone coal of Longtan Formation has the highest Se concentration with a value of up to 11.499 mg/kg. These Se-rich rocks delivered abundant geological sources of Se for the formation of Se-rich soil in tea plantations. The total Se concentration in tea plantation soils ranged from 0.547 to 4.954 mg/kg, with an average of 1.682±0.953 mg/kg. Around 50% of the tea plantation soils intvestigated, which had Se levels between 1-2 mg/kg, were classified as secondary Se-rich soils. The Se concentration in soils was controlled by its parent materials and positively correlated with the organic carbon content (r = 0.27). The average bioavailable soil Se concentration was 0.142±0.043 mg/kg, which accounted for 8.31% of the total Se concentration, averagely and related closely to pH (r = 0.69). The average Se concentration in tea was 0.086±0.049 mg/kg, which was below the national standard of Se-rich tea. In order to promote the tea industry in Shuicheng, the following agronomic measures are recommended aiming to increase tea Se levels to meet the standard of the national Se-rich tea: 1) to raise the pH of the tea plantation soils to enhance Se bioavailability in soils; 2) to perform Se biofortification via applying exogenous Se fertilizer; 3) to plant tea varieties with a trait of high Se accumulation. |
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来源
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地球与环境
,2023,51(5):527-536 【核心库】
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DOI
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10.14050/j.cnki.1672-9250.2023.051.006
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关键词
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富硒区
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生物地球化学
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水城
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富硒茶
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地址
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中国科学院地球化学研究所, 矿床地球化学国家重点实验室, 贵阳, 550081
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中国科学院大学, 北京, 100049
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中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550081
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1672-9250 |
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学科
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农业基础科学 |
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基金
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中国科学院科技扶贫项目
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文献收藏号
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CSCD:7537692
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参考文献 共
46
共3页
|
|
1.
Birringer M. Trends in selenium biochemistry.
Natural Product Reports,2002,19(6):693-718
|
CSCD被引
20
次
|
|
|
|
|
2.
Fairweather-Tait S. Selenium in human health and disease.
Antioxid Redox Signal,2011,14(7):1337-1383
|
CSCD被引
72
次
|
|
|
|
|
3.
Feng R. The roles of selenium in protecting plants against abiotic stresses.
Environmental and Experimental Botany,2013,87:58-68
|
CSCD被引
55
次
|
|
|
|
|
4.
李丽辉. 我国富硒食品的研究进展.
中国食物与营养,2007,89(2):23-25
|
CSCD被引
18
次
|
|
|
|
|
5.
Dinh Q T. Selenium distribution in the Chinese environment and its relationship with human health: A review.
Environment International,2018,112:294-309
|
CSCD被引
95
次
|
|
|
|
|
6.
Gupta M. An overview of selenium uptake, metabolism, and toxicity in plants.
Frontiers in Plant Science,2017,7:2074
|
CSCD被引
10
次
|
|
|
|
|
7.
许凌凌. 微量元素硒与人体健康研究.
农技服务,2016,33(6):85-86
|
CSCD被引
7
次
|
|
|
|
|
8.
Fordyce F M. Selenium deficiency and toxicity in the environment.
Essentials of Medical Geology,2012:375-416
|
CSCD被引
1
次
|
|
|
|
|
9.
Liu H L. Concentration and distribution of selenium in soils of mainland China, and implications for human health.
Journal of Geochemical Exploration,2021,220:106654
|
CSCD被引
8
次
|
|
|
|
|
10.
蔡大为. 贵州省土壤硒含量背景值研究.
地球与环境,2021,49(5):504-509
|
CSCD被引
12
次
|
|
|
|
|
11.
王锐. 我国主要农耕区土壤硒含量分布特征、来源及影响因素.
生物技术进展,2017,7(5):359-366
|
CSCD被引
32
次
|
|
|
|
|
12.
骆振华. 贵州省水城县耕地土壤硒元素地球化学特征及富硒农业应用.
贵州地质,2020,37(4):502-511,525
|
CSCD被引
1
次
|
|
|
|
|
13.
梁若玉. 典型富硒农业基地土壤硒的生物有效性与剖面分布分析.
环境化学,2017,36(7):1588-1595
|
CSCD被引
15
次
|
|
|
|
|
14.
王松山.
土壤中硒形态和价态及生物有效性研究,2012
|
CSCD被引
18
次
|
|
|
|
|
15.
张建.
贵州茶叶主产区环境地球化学特征与产地来源示踪研究,2020
|
CSCD被引
4
次
|
|
|
|
|
16.
汪智慧. 茶树硒营养的研究进展.
土壤肥料,2000(3):3-6
|
CSCD被引
9
次
|
|
|
|
|
17.
马蕊. 不同林龄茶园土壤和茶叶硒含量分布特征及其影响因素.
西南农业学报,2019,32(12):2872-2877
|
CSCD被引
1
次
|
|
|
|
|
18.
唐玉霞. 河北省麦田土壤硒的含量、形态及其有效性研究.
华北农学报,2010,25(S1):194-197
|
CSCD被引
21
次
|
|
|
|
|
19.
吉清妹. 海南农田土壤有效硒含量与分级及其影响因素.
广东农业科学,2016,43(3):88-92,193
|
CSCD被引
6
次
|
|
|
|
|
20.
赵妍.
强酸性高硒茶园土壤硒有效性调控及其机理研究,2011
|
CSCD被引
2
次
|
|
|
|
|
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