浙江红花油茶林分群体产量结构特征分析

Analysis on the population yield components characteristics of Camellia chekiangoleosa stands

通过连续多年对浙江红花油茶样地进行产量统计分析,证实了人工林和天然林的产量分布结构差异不大,验证了浙江红花油茶与油茶、小果油茶及腾冲红花油茶一样,存在高产植株比例小,但其承担群体的产量比例大,低产植株比例大,其承担群体的产量比例小,且高产植株和低产植株是基本固定的事实。对人工林和天然林的生物与生态学特性的连续观测表明树高、冠幅及地径等均与产量存在相关性,但是冠幅的影响更大,主要原因是人工林分种植密度小于天然林分,而人工林分又正处壮林阶段。最重要的是通过测产,证明优良单株在产量中起了关键的作用,为今后的良种选育和低产林改造提供了理论上的支持。

Through the continuous years of Camellia chekiangoleosa sample field yield statistical analysis,confirmed the production of plantation and natural forest distribution structure no difference,it is verified that C.chekiangoleosa same as C.oleifera,C.meiocarpa and C.reticulate,there are a small proportion of high yield plant,but its bearing group's yield proportion is large,the proportion of low-yielding plants was large,and the yield proportion of the bearing population was small,and the high-yielding and low-yielding plants were basically fixed.Continuous observations of biological and ecological characteristics of plantations and natural forests show that tree height,canopy width and ground diameter are correlated with yields,however,the influence of canopy width was greater,mainly because the planting density of artificial stand was lower than that of natural stand,and the artificial stand was in the zhuang forest stage.The most important is to measure the yield and prove that the excellent individual plant plays a key role in the yield,which provides theoretical support for the future breeding of good varieties and the transformation of low yield forest.