氟对茶树生长叶片营养元素含量、儿茶素类物质和香气成分的影响  

Effects of fluoride on growth,nutrient contents,catechins and aroma components in leaves of tea seedlings

作　　者：王丽霞[1,2] 汤举红[2] 肖斌[1] 杨亚军[3] 柳洁[1] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100 [2]长江师范学院生命科学与技术学院,重庆涪陵408000 [3]中国农业科学院茶叶研究所,浙江杭州310013

出　　处：《植物营养与肥料学报》2014年第2期429-436,共8页Journal of Plant Nutrition and Fertilizers

基　　金：国家茶产业体系(CARS-23)资助

摘　　要：本试验为水培试验,研究了不同氟浓度处理(0.1、0.2、0.3 mmol/L F)对茶苗(‘平阳特早’)干物质量、相对生长量、叶片营养元素含量、酚类物质和香气成分的影响。结果表明,随着氟浓度的增加,茶苗的干物质积累和相对生长率显著降低。氟处理显著增加了茶苗叶片总磷和氟的含量,显著降低了总氮与碳酸氢根的含量,但对叶片氯离子含量的影响不显著。随着氟浓度的增加,叶片钾、镁、铁、锌的含量显著降低,而钙含量显著增加。对茶叶儿茶素类物质而言,氟处理显著降低了茶苗叶片四种儿茶素(EGC、EC、EGCG、ECG)和茶氨酸、咖啡碱的含量。此外,0.1 mmol/L F处理降低了茶苗叶片中醛、醇、酯和芳香类物质含量,而0.2 mmol/L F和0.3 mmol/L F处理增加了茶苗叶片主要的香气成分。A hydroponics experiment was carried out to study the effect mmol/L F） leaves of tea on dry matter, relative growth rate, nutrient element contents, seedlings （Camellia sinensis L. Pingyangtezao） in this study. of fluoride contents （0. 1, 0. 2, 0. 3 catechins and aroma components in the The results show that with the increase of fluoride concentrations in culture solution, the accumulation of dry matter and the relative growth rate of tea seedlings decreased, the contents of P, Ca and F in the leaves significantly increased, the contents of N, K, Mg, Fe, Zn and HCO3- in leaves decreased, and the content of C1- keep catechins （EGC, EC, EGCG and ECG）, theanine and caffeine in the roughly stable. The contents of four kinds of leaves dramatically decreased. When the F level in the solution was 0. 1 mmol/L, the contents of aldehydes, alcohols, esters and aromatic substances in the leaves decreased but when the F- level were at 0.2 or 0. 3 mmol/L, the contents of these components increase, giving a improved taste of tea.

关 键 词：茶 氟 生长 营养元素 品质 GC—MS 

分 类 号：S571.1[农业科学—茶叶生产加工]