思茅松人工林生长与立地条件的关系研究

对思茅松人工林生长与地形因子和土壤理化之间的关系进行了分析研究。单因子分析结果表明，思茅松树高生长指标与海拔呈显著负相关，而与坡度、土壤厚度 、有效磷之间呈显著或极显著的正相关；逐步回归分析结果表明，海拔、全钾、有效磷及其组合是影响思茅松生长的主要因子。缺磷少氮是思茅松人工林土壤的共同特点，在选择造林或制定营林措施应当引起足够的重视。

Relation between Growth Increments of Pinus kesiya var. langbianensis and Site Condition

This paper aimed at giving some evidences of the relation between growth increment ofPinus kesiya var. langbianensis plantation and site conditions basis on the investigating materials on plantation .The results of simple regression showed that the altitude was negatively closely correlated to the height increment of top tree and mean tree of plantation,then soil depth, available phosphorous were closely correlated to them. The results of stepwise variable showed that the main factors effecting tree growth were altitude, total potassium, available phosphorous. The simple equations were worked out based on dada analysis.