摘要
分析了苏、浙、赣、闽、粤及海南6省31个茶园土壤母质、土壤和茶叶中不同形态氟的含量,得到母岩含氟量与诸多土壤理化性质和土壤含氟量的相关性,从而发现土壤含氟量与茶园土壤的红壤化程度及种茶后的剖面发育有密切关系,但茶叶的含氟量只与土中的水溶态氟有关。在土壤发育的生物学小循环过程中,茶树富集氟的作用显著,由此造成茶树老叶含氟大于茶园土壤,多数茶园土壤含氟大于母岩含氟,以及土壤有机质含量与土壤含氟量呈极显著正相关。本文还讨论了茶叶及土壤中的 F/Al 比值问题。
Together with the parent materials and tea samples,31 soil profilescollected from 6 provinces in southeast China were analysed,obtainingcorelation between the fluorine contents and the soil properties(contentsof free sesqui-oxide,physical clay particle,amorphous Al and pHvalue)in the soils of various types.Results showed that the totalfluorine content in the soil closely related to the soil allitic process andthe soil profile horizonation,but the fluorine content in tea leaf onlyreated to the water soluble fluorine content in the soil.It was provedthat a strong biologic fluorine enrichment existed in tea plant,resultingthat 1)a higher fluorine content in tea leaf than in the soil;2)a higherfluorine content in the old leaf than in the young leaf;3)a higherfluorine content in the soil than in the parent material and 4)a closecorrelation between the organic matter content and the fluorine contentin the soil.The total fluorine contents in the sampled soils analysedranged from 151.32 ppm to 393.89 ppm with a mean value of 251.75 ppm.And the mean values of the contents of insoluble fluorine,exchange-able fluorine and soluble fluorine were 160.31,83.83 and 12.3 ppmrespectively.Water soluble fluorine occupied 4.81% of the total fluorine,and it was the only type which could be uptaken by tea plant.Closecorrelation existed between the fluorine contents in the soil and in theparent material,for most of the fluorine in the soil came from the parentmaterial.The F/Al ratios in tea leaf and in the soil were also discussedin this paper.
出处
《茶叶科学》
CAS
CSCD
1992年第1期33-38,共6页
Journal of Tea Science
基金
国家自然科学基金
