茶叶揉捻中,成条率随揉捻时间的增加而表现出二次曲线变化规律,其数学模型为： y=5.6277x–0.077x²–17.1439; 细胞破损率随揉捻时间的增加而表现出指数曲线的变化规律,y=85.3e^–11.9/x;为了提高绿茶品质,揉捻时间宜控制在30~40βmin。

In tea rolling, the rolled twig rate is expressed as the regularity of twice curve equation with the extension of rolling time, the mathematical equation is: y=5.6277x–0.077x²–17.1439 and the broken cell rate is expressed as the regularity of the natural logarithm curve equation, the mathematical equation is: y=85.3e^-11.9/x . For improving the quality of tea, the rolling time would be controlled between 30~40βminutes.