东京野茉莉野外调查报告

Field Investigation Report on Styrax tonkinensis

由东京野茉莉吉水自然分布区野外调查表明:它喜生长于气候温暖、较潮湿、土壤疏松而肥沃、土层深厚、微酸性、排水良好的阳坡或半阳坡的疏林或林缘,是伴生树种。树高、胸径速生期在前4a,材积连年与平均生长量在5～6a,数量成熟龄为6a。

Field investigation on natural range of Styrax tonkinen sis showed that the species is a kind of associate type which often grows in thin stocked land or forest edge exposed to the sun with warm and moist weather,loose,ferile and weak acid soil,thick soil horizon and good drainage conditions.The result also indicated the fast growing period of DBH is in early four years and that of annual and average volume in-crement from the fifth year to the sixth year.ln addition,the quantitative maturity is in the sixth year.