Mass fraction of fluorine in some tea gardens of Hunan and Zhejiang

MA Li-feng; SHI Yuan-zhi; HAN Wen-yan; RUAN Jian-yun

Volume 22 Issue 1

Feb. 2017

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MA Li-feng, SHI Yuan-zhi, HAN Wen-yan, RUAN Jian-yun. Mass fraction of fluorine in some tea gardens of Hunan and Zhejiang[J]. Journal of Zhejiang A&F University, 2005, 22(1): 28-32.

Citation:

MA Li-feng, SHI Yuan-zhi, HAN Wen-yan, RUAN Jian-yun. Mass fraction of fluorine in some tea gardens of Hunan and Zhejiang[J]. Journal of Zhejiang A&F University, 2005, 22(1): 28-32.

Mass fraction of fluorine in some tea gardens of Hunan and Zhejiang

1.
Key Laboratory of Tea Chemical Engineering of Ministry of Agriculture , Tea Research Institute , Chinese Academy of Agricultural Sciences , Hangzhou 310008, Zhejiang , China

Funds:

十五国家科学技术部重点资助项目(K2000-05-02)

Received Date: 2004-03-26
Rev Recd Date: 2004-05-24
Publish Date: 2005-02-20

Abstract

The contents of water-soluble F , total F in the soils of tea gardens and the corresponding tea samples in Hunan Province and Zhejiang Province were determined .The results showed that the soil contained total F of (383.83 79.24)mgkg-1 in 0 -20 cm depth , and (347.44 115.95)mgkg-1 in 20 -40 cm depth in Hunan Province , which was a bit lower than the average F level in China (440 mgkg-1), but obviously higher than the F level in the world (200 mg kg-1).The available F content approximately accounted for 0.03 %-0.06 % of the total F .The F content in 0 -20cm depth were higher than that in 20 -40 cm depth .The content of F in tea soil was also low in Zhejiang Province .It was clear from the results that a high correlation was found between F contents (y)in the leaves and water-soluble F content (x)in tea soil , expressed as :y =306.94 x + 139.31 (n =35 , r =0.34＊ , P 0.05), and between F content (y )in mature leaves and new shoots (z),described by the equation :y =4.91z +371.38 (n =35 , r =0.72＊＊ , P 0.01), so F could be accumulated within the tea plants .The contents of F in the new shoots in Hunan and Zhejiang Provinces were (168.26 83.73)mgkg-1 and (81.58 27.20)mgkg-1 respectively , which were at a low level ;the contents of F in mature leaves were (1 197.09 569.95)mgkg-1 and (1 212.72 342.28)mg kg-1 respectively , which were high . The content of water-soluble F in tea soil was a bit lower than that in untilled soil , there being no significant difference (P 0.05).[ Ch , 6 tab .19 ref .]
- tea gardens,
- soil,
- tea,
- fluorine,
- Zhejiang,
- Hunan

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Mass fraction of fluorine in some tea gardens of Hunan and Zhejiang

1. Key Laboratory of Tea Chemical Engineering of Ministry of Agriculture , Tea Research Institute , Chinese Academy of Agricultural Sciences , Hangzhou 310008, Zhejiang , China

Funds:

十五国家科学技术部重点资助项目(K2000-05-02)

Received Date: 2004-03-26

Rev Recd Date: 2004-05-24

Publish Date: 2005-02-20

Key words:

tea gardens /
soil /
tea /
fluorine /
Zhejiang /
Hunan

Abstract: The contents of water-soluble F , total F in the soils of tea gardens and the corresponding tea samples in Hunan Province and Zhejiang Province were determined .The results showed that the soil contained total F of (383.83 79.24)mgkg-1 in 0 -20 cm depth , and (347.44 115.95)mgkg-1 in 20 -40 cm depth in Hunan Province , which was a bit lower than the average F level in China (440 mgkg-1), but obviously higher than the F level in the world (200 mg kg-1).The available F content approximately accounted for 0.03 %-0.06 % of the total F .The F content in 0 -20cm depth were higher than that in 20 -40 cm depth .The content of F in tea soil was also low in Zhejiang Province .It was clear from the results that a high correlation was found between F contents (y)in the leaves and water-soluble F content (x)in tea soil , expressed as :y =306.94 x + 139.31 (n =35 , r =0.34＊ , P 0.05), and between F content (y )in mature leaves and new shoots (z),described by the equation :y =4.91z +371.38 (n =35 , r =0.72＊＊ , P 0.01), so F could be accumulated within the tea plants .The contents of F in the new shoots in Hunan and Zhejiang Provinces were (168.26 83.73)mgkg-1 and (81.58 27.20)mgkg-1 respectively , which were at a low level ;the contents of F in mature leaves were (1 197.09 569.95)mgkg-1 and (1 212.72 342.28)mg kg-1 respectively , which were high . The content of water-soluble F in tea soil was a bit lower than that in untilled soil , there being no significant difference (P 0.05).[ Ch , 6 tab .19 ref .]

Mass fraction of fluorine in some tea gardens of Hunan and Zhejiang

Abstract

References

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通讯作者: 陈斌, bchen63@163.com

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