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本文对黔中马尾松、火炬松、湿地松、云南松及黑松的光合日进程、总光合速率、净光合速率、呼吸速率、二氧化碳的日净积累量,光一光合强度曲线特征、光合午间降低等光合生态特性方面的异同及几种松树的蒸腾强度、耗水量、针叶自然失水过程的异同进行了比较研究,指出造成这些差异的主要原因是各种松树的遗传基础不同;并指出该地区引种湿地松和火炬松较马尾松效益高及该地区不宜引种黑松和云南松的原因。
In this paper, the photosynthetic diurnal course, total photosynthetic rate, net photosynthetic rate, respiration rate, net daily carbon dioxide accumulation, light-photosynthetic intensity curve characteristics, photosynthetic midday depression of Pinus massoniana, Pinus taeda, Pinus elliottii, And their similarities and differences in photosynthetic characteristics and the similarities and differences of transpiration intensity, water consumption and spontaneous water loss of several coniferous trees were analyzed. The main causes of these differences were pointed out as follows: the genetic basis of different pine trees was different; Introduction of Pinus elliottii and Pinus taeda than P. massoniana in the region and the reasons why Pinus thunbergii and Pinus yunnanensis should not be introduced in this area.