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.
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