柑桔栽植密度、树冠覆盖率、叶面积系数和光照强度与产量呈极显著相关。
The fruit yield of sweet orange was found to be highly significantly correlated with planting density, canopy cover rate, leaf area index and light intensity in densely planted orchards.
内容包括造林密度与树冠结构、造林密度与林木生长特性、造林密度与生物量等关系的研究。
The studied items include the relationship between planting density and crown structure, planting density and growth characteristics, planting density and biomass etc.
椴密度与树冠营巢鸟类的种类存在显著负相关关系。
The density of Manchurian linden and the tree-crown -nesting birds shows the conspicuous negative correlation.
密度对上层木的树高、冠长、冠幅、树冠上层枝直径和枝长等的影响比较小；
Stand density had a weak impact on height, crown height, crown width, diameter and length of upper branches;
树冠窄小的乐东拟单性木兰生长速度中等，但其木材密度大、径向均匀性高，是优良的珍贵用材树种；
P. lotungensis is also an excellent precious timber specie with higher wood density and radial uniformity, though its growth rate is medium.
树冠窄小的乐东拟单性木兰生长速度中等，但其木材密度大、径向均匀性高，是优良的珍贵用材树种；
P. lotungensis is also an excellent precious timber specie with higher wood density and radial uniformity, though its growth rate is medium.
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