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为了使铁皮石斛回归自然,在临安市天目山野生铁皮石斛自然分布区域建立不同坡度、不同坡向岩壁模型,用MHWS01温湿度自动记录仪全天候自动记录温度和湿度,结果表明:岩壁的坡度显著地影响岩壁表面的极端温度,夏季,水平的岩壁表面极端温度可高达69.4℃以上,垂直岩壁表面温度不高于50℃,冬季,垂直岩壁表面温度较高,低温持续的时间更短;岩壁坡度还显著地影响岩壁表面的湿度,垂直岩壁表面月均湿度都在80%RH以上;岩壁的坡向对岩壁表面的温度有显著的影响,但对垂直岩壁的日均温与极端温度影响不显著,对岩壁表面的湿度也有显著的影响。岩壁坡度通过影响岩壁表面的极端温度影响铁皮石斛生存,还通过影响岩壁表面的湿度影响铁皮石斛生长,岩壁坡度的选择是铁皮石斛岩壁附生栽培成败的关键。
In order to make Dendrobium officinale return to nature, the rock slope model with different gradient and different slope direction was established in the natural distribution area of wild Dendrobium officinale in Tianmu Mountain of Lin’an City. The temperature and humidity were automatically recorded by the MHWS01 temperature and humidity automatic recorder 24 hours a day. The results showed that the slope of the rock wall was significant In summer, the extremes of rock wall surface temperature can reach as high as 69.4 ℃, the vertical wall surface temperature is not higher than 50 ℃. In winter, the vertical wall surface temperature is higher and the duration of low temperature is more Short; the slope of the rock wall also significantly affected the humidity of the surface of the rock wall, and the average monthly humidity of the vertical rock wall surface was above 80% RH; the slope direction of the rock wall had a significant effect on the surface temperature of the rock wall, The daily average temperature and extreme temperature have no significant effect on the wall surface humidity. The slope of rock wall affects the survival of Dendrobium candidum by affecting the extreme temperature of the rock wall surface, and also influences the growth of Dendrobium candidum by affecting the surface moisture of the rock wall. The choice of rock slope is the key to the success or failure of epiphytic cultivation of Dendrobium candidum.