尾叶桉U6无性系立木木材吸水率差异性检验的浅析  

An initial analysis to difference test of standing timber water absorption of Eucalyptus Urophylla U6

作　　者：刘国余 余彩燕 覃绮媚 梁景生 

机构地区：[1]国营雷州林业局石岭林场,广东廉江524456 [2]广东长荣林业发展有限公司,广东梅州514700 [3]吴川市第一中学,广东吴川524500 [4]国营雷州林业局,广东遂溪524348

出　　处：《林业建设》2013年第4期19-22,共4页Forestry Construction

摘　　要：本文取用直接数据和对数形式分别对尾叶桉U6(E.urophyllaU6)无性系立木木材的1.3米树高处与3/4树高处的吸水率,1.3米高处与立木木材平均的吸水率,3/4树高处与立木木材的平均吸水率作差异性检验(即t检验)。检验结果:1.3米树高处与3/4树高处的吸水率有较明显的差异,检验(1)的t值为7.284039,检验(2)的t值为7.534392;1.3米树高处与立木木材平均吸水率略有差异,检验(1)的t值为4.032628,检验(2)的t值为4.158868;3/4树高处与立木木材的平均吸水率也略有差异,检验(1)的t值为3.522437,检验(2)的t值为3.616320。从检验结果的数据可看出两种检验方法的结果是基本一致与吻合的。回归方程的变量之间的相关程度高,相互作用明显显著,回归方程的估测精度达94.0%以上,达二至一级水平,回归方程在本林区适用。This paper makes Eucalyptus urophylla clone U6,s standing timber water absorbtion difference test （namely seven-digit test） at the point of 1.3-meter height to 3/4 height of the tree;at the point of 1.3-meter height to the average timber water absorbtion;at the point of 3/4 height of the tree to the average timber water absorbtion by using direct data and logarithmic form respectively.The result is that the water absorbtion at the point of 1.3-meter differs remarkablely from that of the 3/4 height of the tree.The seven-digit test （ I ）is 7.284039.The seven-digit test（ II ） is 7.534392.The water absorbtion at the point of 1.3-meter height differs slightly from the average standing timber water absorbtion.The test（ I ） and test（ II ）is 4.032628 and 4.158868 respectively.The water absorbtion at the point of 3/4 height aslo differs slightly form the average standing timber absorbtion.The test（ I ） and test（ II ） is 3.522437 and 3.616320. The test data shows that the results of the two test methods are basically coincident.The variables of the reqression equation are related to a high degree and the interaction is outstanding.The estimation accuracy is over 94.0%,reachin two to one level,The reoression eouation is suited to local forest area.

关 键 词：尾叶桉U6 无性系 立木 木材 吸水率 差异性 

分 类 号：S781.33[农业科学—木材科学与技术]