云南石梓是热带的珍贵用材树种,在国内天然分布仅限于我省。我省现已开始小片试验栽培,生长很好。在发展我省热区营林事业上,云南石梓是一个值得重视的乡土树种。一、形态特征落叶乔木,高可达35米,胸径可达1米。干形不稳定,常弯曲而不圆正。树皮灰黄色,不规则块状剥落,具环状大型皮 Yunnan Shi Zi is a tropical precious timber species, the natural distribution in the country is limited to our province. My province has now begun a small piece of test cultivation, grow well. In the development of hot springs in our province forest business, Yunnan Shi Zi is a native tree species worthy of attention. First, the morphological characteristics of deciduous trees, up to 35 meters, diameter up to 1 meter. Dry instability, often curved but not round positive. Bark greyish yellow, irregular massive peel, with a ring of large skin