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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

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
通讯作者: 陈斌, bchen63@163.com
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    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

Funds:

十五 国家科学技术部重点资助项目(K2000-05-02)

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 .]

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.

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