北京林学院主编的《测树学》教材中,在第一章第四节就区分求积的误差问题,周沛村同志导出了如下表达式:P_n=P_1/n~2(式中n为区分段数)。安徽农学院章平澜同志对此式提出了异议。我想发表一点看法,与上述两同志商榷。首先,我认为区分求积与不区分求积相比,其前提是在对同株树干,用同样公式进行求积,主要讨论随着区分段数的增加其精度的变化。由于树干形状多变,不是也不可能把 In the text of “Tree-measuring” edited by Beijing Forestry College, Comrade Zhou Peicun derived the following expression in the fourth chapter of Chapter One: P_n = P_1 / n ~ 2 (where n is Distinguish the number of segments). Anhui Agricultural College Comrade Zhang Pinglan filed an objection to this formula. I would like to make a point of expressing my views and discuss the above two comrades. First of all, I think that the difference between quadrature product and non-product product quadrature is based on the premise of quadratically using the same formula for the same tree trunk. The main discussion is about the change of accuracy with the number of segments. Due to the changing shape of the trunk, it is not impossible to put it