火炬树为落叶灌木或小乔木,属漆树科。原产北美,阳性树种。适应性极强,喜生于沿河沙滩、堤岸及沼泽地边缘,又能生于干旱、荒坡地。喜湿耐寒、耐旱、耐轻度盐碱,根系较浅,水平根发达,根蘖萌发力极强,是一个良好的水土保持和固沙造林的先锋树种,也是庭院观赏树种。我所1975年从北京植物园引种,已获成功。从1980年起我所又开展了火炬树苗期蒸腾作用测定的研究,现将结果报告如下。 Torch tree deciduous shrubs or small trees, is a tree branch. Native North America, positive tree species. Strong adaptability, hi born in the sand along the beach, embankments and marsh edge, but also born in drought, wasteland. It is a pioneer tree species for soil and water conservation, sand fixation and afforestation, and also a ornamental tree species in the garden. I was introduced from the Beijing Botanical Garden in 1975, has been successful. From 1980 onwards, I conducted a study on the transpiration of torch tree seedling stage, the results are reported as follows.