摘要
通过对4种不同密度8年生板栗园树体生长发育、生物量、对生物生产力的系统分析，研究了板栗密植园的生长分化机理．栽植密度区显著影响板栗树体的生长发育；它不仅对单株生物量及林分生物量存在显著的影响，同时也影响生物量在枝、叶、果中的分配比例．不同密度林分的净生产量、经济利用系数、太阳能利用率均存在一定的差别，这种差别随林分年龄的变化而变化．高密度林分可获得早期产量的迅速提高．但达到一定年龄阶段（6年生）以后必须进行适时间伐，以保持林分产量的相对稳定．
Eight-year old trees of Castanea mollissima with four planting densities were stud-ied, with a view to better understanding the relationship between planting density and treegrowth. Results-showed that planting density had a decisive impact on the growth of the trees in-volved. It not only resulted in different weight in biomass at both the individual tree level and thestand level, it also led to a remarkable difference in biomass distribution among the branches,leaves, and fruits. There were certain variations among the stands with different densities interms of net productivity, economic utilization efficiency, and the efficiency of solar energy uti-liz8tion,which all changed with the age of the stand. The yield of high-density stands increasedmore rapidly than that of low-density stands during the early years ; however, it was necessaryto thin the orchard in the 6th year to guarantee a stable yield.
出处
《经济林研究》
1998年第3期12-16,共5页
Non-wood Forest Research
关键词
板栗
密植园
生物量
生物生产力
Castanea mollissima
High-density orchard
Biomass study
