Abstract:

Tieguanyin is a popular tea cultivar cultivated in Fujian, China. Due to the seasonal drought, the yield of Tieguanyin tea had been lost a lot. Based on the precipitation data during 1965 - 2006 for three climatological stations in the main Tieguanyin cultivate area , some peculiarities of the precipitation , such as the circle and degree of concentration , as well as the changes in the years and months, were analyzed in this paper. The result showed that the total rainfall changed more significantly in the years after 1979 than in the years before 1979. Typically, it wass wet season from May to September in the Tieguanyin cultivate area, whilst, it was dry season from October to November. The rainfall of the dry season at the 3 station were 7.5%, 6.0% and 5.8% of the annual rainfall in the years before 1979, respectively. However, they decreased to 5.8%, 4.7% and 5.0% in the years after 1979. The conclusion could be drawn here that the rainfall in the fall season could not reach the watering amount, which was necessary for the Tieuanyin tea plant developing. The irrigation works must be carried out for the optimal produce of Tieguanyin Tea plants.