圣音竹引种培育技术研究

A Study of Introduction and Cultivation Technology of Phyllostachys heterocycla cv.Tubaeformis S.Y.Wang

圣音竹地下茎乳白色,节间长15～24cm,横向水平状起伏生长。大小年较为明显,呈现大年长笋、小年长竹的生长规律。竹秆节间长4～6cm,株高仅为3～8m。直径与叶面积指数高度相关R=0.9966。竹林平均胸径1～2cm的最佳密度为5100～6000株/hm2,3～4cm的最佳密度为4500～5250株/hm2,4～5cm的最佳密度为3300～4200株/hm2。区域引种试验证明,圣音竹是一个可以广泛推广的优良竹种。

Phyllostachys heterocycla cv.Tubaeformis S.Y.Wang is a singular and endangered but highly appreciated bamboo species,also it is a unique bamboo species in Hunan.P.heterocycla cv.Tubaeformis S.Y.Wang＇s rhizome is white in color,its internodes are 15-24 cm long,and it has an undulating growth at horizontal dimension.There is an apparent variation between bumper year and small year,i.e.shoots grow faster in bumper year,while bamboo culm grows faster in small year.The length of internodes is 4~6 cm ,and the culm height is 3~8m .The correlation coeffi cients of diameter to leaf area index is R = 0.9966,which indicates that they are highly correlated.If the average DBH is 1~2 cm ,the optimal planting density is 340~400 plants/mu.If the average DBH is 3~4 cm ,the optimal planting density is 300~350 plants/mu.If the average DBH is 4~5 cm ,the optimal planting density is 220~280 plants/mu.The regional experiment has proved that P.heterocycla cv.Tubaeformis S.Y.Wang can be widely extended as an excellent bamboo species.