<正>采用二阶差分机理方法建立的Ｋａｌｍａｎ滤波树木生长预估模型与方法，对杉木生长动态进行描述。结果表明，平稳化处理后的动态模型与方法具有良好的噪声特性与拟合效果。

Following the paper application of Kalman filtering method in growth models (Ⅰ), this paper deals with the growth estimation of chinese fir by use of Kalman filtering method associated with growth model (Ⅱ) built by the second order difference method. The results show that difference growth model and Kalman filtering mothod can be used to describe the growth of trees better. This paper also provides a new method to estimate tree growth.