茶叶科学Issue(5)：423-428,6.
不同品种茶树生长对氮素浓度的响应差异
Growth Characteristic of Different Cultivars of Tea Plant in Response to Nitrogen Contents
摘要
Abstract
Vegetative propagatedplantsof6tea cultivarsweresand cultured in pots andfertilizedwithnutrient solution containing 0, 0.06, 0.60and 6.00mmol/L nitrogen.The growth characteristicsof tea plantswere analyzed underthefournitrogenlevels.The results showed:(1)Plant height, root FW, shoot FWandSPADvalue of leaves decreased significantly undernitrogen deficiency stress.Total biomassshowedpositivecorrelationswithroot FW androot shoot radio(P<0.05).(2)The nitrogen utilization abilities were variedwidely with the genotypes oftea plant. Among 6 tea cultivars, ‘Fudingdabaicha’and ‘Chungui’ were identified to the genotypeswithhigh use efficiencyunderthe low nitrogen content.(3)The root shoot ratios were higherundernitrogen deficiency stressand the maximalvariation range was 20.97% as in ‘Tieguanyin’.Root shoot ratiodiffered significantly bygenotypes. The root shoot ratios for ‘Tieguanyin’ and ‘Chungui’ were 0.71 and 1.81,respectively.(4)It was demonstrated that root shoot ratioand SPAD valuesunder nitrogen deficiency stress could beused asscreening indexesfor low-N toleranttea cultivar.关键词
茶树品种/低氮胁迫/生长特性/根冠比Key words
teacultivar/nitrogendeficiency/growthcharacteristic/root shoot ratio分类
农业科技引用本文复制引用
王丽鸳,陈常颂,林郑和,韦康,吴立赟,冯素花,成浩..不同品种茶树生长对氮素浓度的响应差异[J].茶叶科学,2015,(5):423-428,6.基金项目
浙江省茶树农业新品种选育重大科技专项（2012C12905）、国家茶叶产业技术体系 （）
