楸树是我国中原地带的珍贵用材树种,生长速度快,分布范围广。研究其最适宜的立地条件,施以集约经营措施,使其速生丰产,为国家建设和群众生活提供大量上等良材,是十分有意义的。为此,我们于1982年4～6月进行了调查研究。 楸树,属紫葳科梓树属,生长在山东的有二个种,最普遍的是金楸(Catalpa bungli C、A、Mey),其次是灰楸(Catalpa fargesii Bur),二种楸树交错分布。 楸树干形通直高大,树冠狭长,树姿优美挺拔,素有树木之王的称号。树质坚实致密,不翘不裂,耐水耐腐,抗虫蛀,花纹美丽,色泽金黄色或银白色,是群众最喜欢的 Catalpa bungei is a precious timber species in the Central Plains of China, with fast growth and wide distribution. It is of great significance to study its most suitable site conditions, impose intensive management measures, bring about fast-growing and high-yielding crops, and provide a large quantity of excellent raw materials for the country’s construction and people’s livelihood. For this reason, we conducted a survey in April-June 1982. Catalpa bungei, Catalpa bungei is a genus, there are two species of growth in Shandong, Catalpa bungli C, A, Mey, followed by Torre Catalpa (Catalpa fargesii Bur), two Catalpa trees Staggered distribution. Catalpa trunk shape through the tall, narrow canopy, tree graceful tall and straight, known as the king of the tree’s title. Solid, dense, non-oval, water-resistant, anti-moth-eaten, beautiful pattern, golden yellow or silver color, is the favorite of the masses