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计算原木的实际材积一般采用两种方法,即斯马利安求积式(亦称平均断面求积式)和胡伯尔求积式(亦称中央断面求积式)。由两公式可知,当材长和小头直径为一定值时,原木的尖削程度越大,其材积亦大,反之,材积亦小。 用现行部颁标准LY108—61原木材积表衡测泡桐原木材积时,据检尺单位反映,查表材积比实际材积小10％左右。为究其原因,必须首先研究泡桐原木的削度规律,并作为是否应编制新的泡桐原木材积表的技术依据。本文研究的目的即在于此。 为进行泡桐原木削度研究,二年来在泡桐产区河南省民权、扶沟、睢县、兰考;山东省曹县、成武、青岛、临沂、冠县、菏泽、烟台共量测4785根原木削度资料,作为本项
Calculate the actual volume of logs generally use two methods, that is, Smalian An integral (also known as the average cross-sectional area), and Huber quadrature (also known as the central cross-sectional area). The two formulas show that when the length of wood and the diameter of a small head is a certain value, the greater the taper of the log is, the larger its volume is. On the contrary, the volume is small. With the current ministerial standard LY108-61 logs volume table measured Paulownia log volume, according to ruler units reflect the look-up table volume is about 10% smaller than the actual volume. For the sake of reason, we must first study the tapping rules of paulownia logs, and as a technical basis for the preparation of new paulownia logs list. The purpose of this study is that. For the study of Paulownia wood tapping, two years in the Paulownia producing areas of Henan Province, civil rights, Fugou, Pixian, Lankao; Shandong Cao County, Chengwu, Qingdao, Linyi, Guan County, Heze, Yantai total measurement of 4785 logs Degree of information, as this item