【摘要】 以山东乡土针叶树种油松和黑松作对比，研究了从美国引种的１２年生美国白松的物候期及新梢、针叶的生长特性。以Ｌｏｇｉｓｔｉｃ方程拟合３种针叶树新梢和针叶的生长，并用数学分析的方法确定各树种新梢和针叶的速生期和速生点。测定了３个针叶树种的径、高年生长量。结果表明，美国白松在山东能够正常生长发育，生长期比油松和黑松短，但生长迅速，年生长量比较大，是一个值得引进并扩大栽培的速生针叶树种更多还原

【Abstract】 The phenological phase and the growing Property of new shoots and needles of twelve year old pinus strobus which had been introduced from America were studied and compared to the local Pinus tabulae formis and Pinus thunbergii. Logistic growth equation was adopted to approach the growing process of new shoots and needles of the three conifers. The fast growing stage and the maximum points of growing speed were estimated by mathematic analysis. And the annual increment in length and in thickness of the three conifers were determined. The results indicated that Pinus strobus could grow normally and quickly with high annual increment though its growing period was shorter than Pinus tabulaeformis and Pinus thunbergii, and that Pinus strobus was a fast growing conifer which deserved being introduced and grown more extendly.更多还原