不同种植模式下茶树光合特性、茶芽性状及茶叶化学成分的比较  

Comparison of photosynthesis characteristics,bud characters and chemical compositions for tea in different planting models

作　　者：肖正东[1] 程鹏[2] 马永春[3] 王道金[2] 佘诚棋[3] 蔡新玲[1] 季琳琳[1] 

机构地区：[1]安徽省林业科学研究院,安徽合肥230031 [2]安徽省林业厅,安徽合肥230001 [3]安徽省林业科技推广总站,安徽合肥230001

出　　处：《南京林业大学学报（自然科学版）》2011年第2期15-19,共5页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：安徽省科技攻关计划(09010304023);安徽省林业重点科研项目(皖LZ200815)

摘　　要：以板栗-银杏-茶(CGT)、板栗-茶(CT)、纯茶(T)种植模式下的茶树为研究对象,测定了茶树光合特性、茶芽性状及茶叶化学成分,分析了影响茶芽性状和化学成分的主要光合因子。结果表明,不同种植模式内茶树净光合速率的日变化均呈单峰型。与T模式相比,GCT、CT模式内茶树净光合速率、茶芽长、茶芽密度、百芽质量及产量均有所下降,但茶叶水浸出物、咖啡因、氨基酸含量增加,仅茶多酚含量降低,可见茶园间种银杏或板栗有利于提高茶叶品质。多元回归分析表明,光合因子中对茶芽性状及茶叶化学成分影响最大的是蒸腾速率,其次是净光合速率和叶绿素含量,最小的是气孔导度。Photosynthesis and bud characteristics,and chemical compositions of tea in Chestnut-Ginkgo-Tea（CGT）,Chestnut-Tea（CT） and Tea（T） models were measured,and the main factors affecting bud characteristics and chemical compositions were analyzed.The results showed that the diurnal change of photosynthetic rate of tea in all planting models presented a single peak curve.The net photosynthetic rate,bud length,bud density,100-bud weight and yield in CGT and CT models decreased when compared with T model,but the water extracts,coffee alkali and amino acid content for tea increased,while tea polyphenols decreased,which showed that Ginkgo or Chestnut and Tea mixtures could improve tea quality.Multi-regression analysis indicated that the effect of photosynthesis characteristics on bud characters and chemical compositions could be arranged as evaporation rate,net photosynthesis rate,intensity of CO2 among cells and stomatal conductance.

关 键 词：复合种植 茶 光合特性 茶芽性状 化学成分 

分 类 号：S718.3[农业科学—林学]