Studies on Biological Characteristics and High-Yielding with Dwarfing and Close Planting Systems in Camellia yuhsienensis

In this report a series of biological characteristics in C.yuhsienensis which was introduced into Zhejiang Province from Hunan Province,was systematically observed.The relationships between fruit yield and major economic characteristics analysed.Various planting densities were tested.Some linear regression equations were established as follows: y=0.048 x1-4.537;y=0.034 x2-2.240(y: kg,Fruit yield of individual tree;x1: cm,Crown depth;x2: cm,Crown diameter).According to the different management types,it is suggested that the best planting density for C.yuhsienensis should be 7500~14250 trees/ha to achieve high-yielding.