中国土壤与肥料Issue(3)：48-56,9.DOI:10.11838/sfsc.1673-6257.24374
鄂西咸丰县茶园土壤和茶叶中锌含量及其影响因素分析
Characteristics and influencing factors of zinc content in tea and the planting soil in Xianfeng county,western Hu-bei province
摘要
Abstract
In order to study the translocation and accumulation of zinc(Zn)in soil and tea tree system under actual production conditions,1478 soil samples and 130 sets of tea samples were collected in the Xianfeng county.The contents of Zn,constant oxide,organic carbon and pH value in soil,as well as the contents of heavy metals and Zn in different parts of tea plant were determined.The correlation analysis of Zn content in soil and tea was carried out,and the influencing factors of Zn biological absorption coefficient were studied.The results showed that the average Zn content in tea soil was 92.14 mg/kg,which was higher than the mean abundance of 69 mg/kg in China.For the profile distribution,the contents of Zn increased or first decreased and then increased with the depth increasing.The soil Zn was mainly in the form of residue,followed by the humic acid binding state and iron and manganese oxides,together accounting for 84.35％of the total pool.The proportion of average bio-available Zn content was relatively small(water-soluble Zn and ion-exchange Zn accounted for 2.73％).The average Zn content in tea was 37.41 mg/kg,and the range of bioconcentration factor was 15.95％-92.94％.According to the Zn content and bioconcentration factor,different parts of tea plant were ranked as tender leaves>roots>stems>old leaves,which indicated that Zn was easily to enrich in tea under actual production conditions.The correlation analysis showed that soil organic carbon content had significant positive correlation with available Zn content.Soil constant oxide and pH value had opposite effects on Zn and bioavailability of Zn in soil.Factors such as high pH degree,soil with low SiO2 content and high Fe2O3 and Al2O3 content could promote the accumulation of Zn in soil,but also limited the activity of available Zn.关键词
锌/土壤-茶树系统/形态/生物有效性/影响因素Key words
zinc(Zn)/soil-tea system/form/bioavailability/influencing factors引用本文复制引用
段碧辉,孙奥,袁知洋,王芳,杨波涌,杨军,项剑桥..鄂西咸丰县茶园土壤和茶叶中锌含量及其影响因素分析[J].中国土壤与肥料,2025,(3):48-56,9.基金项目
湖北省自然科学基金项目(2023AFD220) （2023AFD220）
湖北省地质局项目(MSDZ202212、MSDZ201806、KJ2024-4). （MSDZ202212、MSDZ201806、KJ2024-4）
