The fitted multivariate quadratic regression equation can better express the relation of seedling growth of the alder to physical-chemical factor of the soils.

• 根据36种土壤上桤木(Alnus cremastogyne)盆栽试验的结果,用多元二次回归方程拟合,通过微电脑运算,探讨了幼苗生长与13项土壤理化因素的关系。