我们的网站为什么显示成这样?

可能因为您的浏览器不支持样式,您可以更新您的浏览器到最新版本,以获取对此功能的支持,访问下面的网站,获取关于浏览器的信息:

|Table of Contents|

公路边茶园土壤与茶树中重金属的积累与分布(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2002年04期
Page:
39-42
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
The Accumulation and Distribution of Heavy Metals in Teas on Both Sides of Highway
Article ID:
1000-2006(2002)04-0039-04
Author(s):
WU Yong gangJIANG Zhi linLUO Qiang
College of Forest Resources and Environment Nanjing Forestry University,Nanjing 210037,China
Keywords:
Heavy metalsTeaAccumulationHighway
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2002.04.010
Document Code:
A
Abstract:
The heavy metals concentration and distribution in different organs of tea and in soil on the both sides of National Highway 312 are studied.The results show that Pb,Cd,Cr,Cu,Mn,Ni,Zn concentrations are significantly different in different organs of tea.The ranges of them respectively are 1.2~9.4 ,0.06~0.36,0.84~0.9,3.6~12.6,66~461,3.7~7.6,18.2~35.9 mg/kg.The concentrations of Pb,Cd,Zn are higher in tender branches.While the accumulation of Cu,Mn,Ni is higher in tea leave.Tea has the significant function of accumulating Cd.The concentration order of 7 heavy metals in tender leaves is Cu>Zn>Mn>Cd>Ni>Pb>Cr.Pb pollution from tail gases emitted by automobiles diffuses mainly within 60 m apart from the highway.Because tea is manufactured from tender leaves,the standard to decide whether it is suitable to plant tea trees in both sides of highways is the comparison between the Pb content in tender leaves and the National Health Standard.The study shows that the Pb content in tender leaves exceeds the National Health Standard when the distance of tea plantation from highways is less than 60 meters.So without protective measures,it is not suitable to plant tea plantation within above mentioned distance.

References

-

Last Update: 1900-01-01