Quantitative Assessment on Contribution of Technical Progress to the Tea Production in China

Contribution rate of technical progress to the tea productivity during 1980s in China, to large extent, can illustrate the effect of technical innovation on Chinese tea production in the last thirty years. The result, by applying Cobb Douglas Production Function and Solow's Residual Method. showed that 84.2% of the increase in per unit area yield from 1980 to 1991 was explained by time variable, which was related to the popularization of household contract responsibilitysystem? technical innovation and previously planted tea seedling growing into adult. The 56.1% of the increase from 1985~1991 was mainly contributed by technical progress.