To investigate the effect of foliar fertilizer on the physicochemical composition,this study took tea culti-vars'Longjing 43','Xin'an 4'and'Zhonghuang 2'as the research materials.The contents of tea polyphenols,amino acids,caffeine and chlorophyll in shoots of one bud and two leaves were analyzed through applying 0.5%urea foli-ar fertilizer.The results show that under the application of foliar fertilizer,the chlorophyll contents of 3 tea cultivars increased;the contents of amino acids in shoots of'Longjing 43'and'Zhonghuang 2'were significantly increased,the contents of caffeine and tea polyphenol were decreased,while the contents of amino acids and caffeine in shoots of'Xin'an 4'were decreased.Foliar fertilizer application had important effects on the expression of genes related to nitrogen metabolism and chlorophyll pathway.In conclusion,the application of foliar fertilizer can regulate the quality components in new shoots of tea and improve the quality of green tea by regulating the expressions of relat-ed genes.The results of this study were expected to provide a theoretical basis for the application effect of foliar fer-tilizer on tea cultivars with different leaf colors.
维普
万方数据
