俗话说：茶过“立夏”一夜老。在夏茶生产期间，由于气温较高，光照较强，空气中的相对湿度较低，茶树体内新陈代谢旺盛，新梢生长快，展叶力强，极易老化。采下来的鲜叶，对夹叶增多，芽叶比重小，纤维素含量高，鲜叶中氨基酸、全氮物质含量减少，鲜醇味下降，多酚类，花育素 As the saying goes: Tea had “legislation” overnight. During the summer tea production, due to the higher temperature, stronger light and lower relative humidity in the air, the metabolism of the tea tree is exuberant, the shoot grows fast, the leaf power is strong, and the aging is very easy. The fresh leaves collected from the leaves increased, the proportion of shoots and leaves was small, the content of cellulose was high, the content of amino acids and total nitrogen in fresh leaves decreased, the fresh alcohol decreased, the contents of polyphenols,