Study on the Content Changes of Zinc and Selenium in Tea and Differences in the Planting Soil
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摘要: 以贵州4个茶叶产地(贵定、都匀、凤冈、湄潭)生产的新鲜茶叶(贵定云雾茶、都匀毛尖、凤冈锌硒茶、湄潭翠芽)及种植土壤为材料,研究了不同茶树叶片及种植土壤的锌、硒含量,研究不同土壤类型及不同深度土壤锌、硒含量的差异;茶树当年生新叶(一芽二叶)和生长1年以上老叶的锌、硒含量变化;土壤锌、硒含量与新老叶片锌、硒含量之间的关系。结果显示,随着茶园土壤深度(0～20 cm,20～40 cm)的增加,锌含量增加了2.0%~18.0%,而土壤硒含量则没有明显变化;不同样地土壤和同一样地土壤不同深度的锌、硒含量差异均达显著水平(Sig.< 0.01),但差异未见明显规律;茶树新叶锌、硒含量比老叶分别高2.3~4.0倍和1.2~3.0倍;新叶的锌、硒含量与土壤锌、硒含量呈正相关关系,且新叶中的锌、硒含量之间也呈正相关关系。表明土壤中的锌、硒含量来源于成土母岩并直接影响茶叶的品质,因此合理选择土壤类型对种植优质茶和规划发展茶产业具有重要意义。Abstract: Selecting tea and soil from four tea gardens, Guiding, Duyun, Fenggang and Meitan, as test materials, we tested the content of zinc and selenium in different tea leaves and planting soils. We also studied the differences in zinc and selenium content in different soil types and depths, the differences in zinc and selenium content in new tea leaves (one bud two leaves) and leaves older than one year, and also the relationship between content in soil and leaves. With the increase in soil depth from 0-20 cm to 20-40 cm, the content of zinc increased from 2.0% to 18.0%, respectively, but the content of selenium did not change significantly. The content of zinc and selenium showed significant differences in different soils and soil depths in the same plots (Sig.< 0.01), but the differences exhibited no obvious regular change. The content of zinc and selenium in new tea leaves were 2.3 to 4.0 times and 1.2 to 3.0 times higher, respectively, than that in old leaves (greater than one year old). The content of zinc and selenium in new tea leaves had a positive correlation with the content in soil, and there was a positive correlation between zinc and selenium content in new leaves. Results showed that zinc and selenium came from pedogenic rock, and directly affected tea quality. Thus, the selection of a reasonable soil type is important in regards to high-quality tea and tea garden construction.
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Keywords:
- Tea /
- Soil /
- Content of zinc /
- Content of selenium
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[1] 顾谦,陆锦时, 叶宝存. 茶叶化学[M].合肥: 中国科技大学出版社, 2002. [2] 何电源,许矧焕,范腊梅.茶园土壤的养分状况与茶叶品质及其调控的研究[J].土壤通报,1989,20(1):245-248. [3] 董广辉,陈利军,武志杰. 植物硒素营养及其机理研究进展[J]. 应用生态学报,2002, 13(11):1487-1490. [4] 黄啟亮,龚永新,蔡烈伟.茶叶中锌含量研究进展[J]. 茶叶科学技术, 2006(4): 12-14. [5] 韩文炎,许允文.铜与锌对茶树生育特性及生理代谢的影响——Ⅳ. 锌对茶树体内矿质元素含量及分布的影响[J].茶叶科学, 1996,16(1): 13-18. [6] 吴洵. 红壤茶园土的背景值及茶树对锌的吸收[J].茶叶通讯,1991(2): 17-20. [7] 张婉婷,聂水泉,张灵枝.茶树硒元素的研究进展[J].广东茶业,2011(4): 20-22. [8] 中国农业科学院茶叶研究所.茶树生理及茶叶生化实验手册[M].北京:农业出版社,1983. [9] 唐启义. DPS数据处理系统——实验设计、统计分析及数据挖掘[M]. 北京:科学出版社,2010. [10] 段继春,彭克勤,常硕其.茶叶中锌元素的研究现况[J].茶叶通讯, 2005,32(1): 15-20. [11] Cannon HL. Rocks:the geologic source of most trace elements[J].Geochem Environ, 1978,3(2): 17-31.
[12] 李灵, 张洪江,张玉,江慧华,谢妤,杜洪庆,周艳. 岩茶种类和种植年限对茶园土壤中微量元素含量分异特征的影响[J].扬州大学学报, 2010,31(2): 53-58. [13] 黄彩梅,王爱杰,邹天才,刘海燕.贵州茶种植业发展的茶园区划研究[J].贵州林业科学, 2012,40(4): 42-45. [14] 黄彩梅,刘海燕,周盛勇,梁远发. 黔北地标品牌优质茶的栽培生境与种植调查[J].贵州科学, 2011,29(5): 92-96. [15] 赵天辉,安智勇. 锌硒肥在茶树上的应用[J]. 遵义科技,2009, 37(4): 46-48.
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