汝城县 1983年从福建省引进李 ,经过 18年的试验和示范推广 ,目前栽培面积达 32 0 0ｈｍ2 ,年总产值近亿元 ,李成为汝城县的主栽水果 ,是该县种植最成功的果树。现将我县 18年来对李生物学特性调查研究的结果介绍如下。1　物候期1.1　枝梢生长　一般一年抽梢 3次 ,即春梢 Rucheng County in 1983 introduced from Fujian Province Li Li, after 18 years of trial and demonstration of promotion, the current cultivation area of ​​3200hm2, annual output value of nearly 100000000 yuan, Li Chengcheng Rucheng become the main fruit, is the county Grow the most successful fruit tree. Now 18 years in our county on the biological characteristics of plum Lee survey results are as follows. A phenophase 1.1 Shoot growth tip of the general year three times, that spring shoots