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选取封闭和开放5年同海拔的黄山杜鹃样树,调查了5年标准枝和受损枝每年的新梢生长量,研究开放期间受损枝受损情况和封闭期间受损枝恢复情况。结果表明,开放期间受损枝条新梢生长量逐年降低,开放第5年受损枝条新梢生长量只有标准枝的39%,开放第4年生长率下降最多。开放期间黄山杜鹃受损枝条的新梢生长量与开放年数的关系符合指数模型。封闭期间受损枝条新梢生长量逐年上升,封闭第5年受损枝条新梢生长量达到标准枝的86%,封闭第4年生长率上升最多。封闭期间黄山杜鹃的新梢生长量与封闭年数的关系为幂函数模型。
Huangdu Rhododendron-like trees, which were closed and open for 5 years, were selected to investigate the annual shoot growth rate of standard and damaged branches in 5 years. The damage of impaired branches during opening and the recovery of impaired branches during occlusion were investigated. The results showed that the growth of shoots of damaged branches decreased year by year. The growth of shoots of damaged branches was only 39% of the standard branches in the fifth year of opening, and the growth rate of the damaged branches in the fourth year was the largest. The relationship between the number of shoot growth and the number of open years in the damaged shoots of Rhododendron fortunei in the open period conformed to the exponential model. During the period of closed, the shoot growth of damaged shoots increased year by year. The growth of shoots damaged the fifth year reached 86% of the standard shoots, and the growth rate of the closed fourth year increased most. The relationship between the growth of shoots and the number of closed years of Rhododendron fortunei in closed period was power function model.