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本文以生长在3 种长江滩地类型( 江滩、洲滩、湖滩) 、3 种栽植密度(3m ×4m ,4m ×5m ,5m ×6m) 下的3 个品系人工林杨树,即[ 欧美杨无性系72 杨( Populus×euramericana cv.Ⅰ- 72/58) ,美洲黑杨无性系63杨( P.deltoidescv .Ⅰ- 63/51) 和69 杨( P.deltoides cv .Ⅰ- 69/55)( 以下简称72 杨,63 杨,69 杨) 为对象,在研究人工林杨树木材性质与单板和胶合板质量关系的基础上,先用逐步回归筛选有关关键材性指标,然后再进一步模拟人工林杨树木材性质与单板和胶合板质量之间的关系。结果表明,长江滩地72 、63 、69 杨单板和胶合板质量能够用与之相关的木材性质指标进行多元线性回归模拟。单板厚度偏差( VVT) 随纤维宽度( FW) 、木纤维比量( FP) 、导管比量( VP) 变化的模型为:VVT= - 3-414 + 0-063 FW+ 0-049 RP- 0-033 VP单板背面裂隙率( RLC) 随木材弦面硬度( TH) 、抗弯弹性模量( MOE) 、气干密度( WD) 和体积全干干缩率( SV) 变化的模型为:RLC= 9-472 + 0-005 TH+ 0-?
In this paper, three species of poplar plantations poplar grown in three types of Yangtze River beach land (beach, beach, beach), three planting density (3m × 4m, 4m × 5m, 5m × 6m) Populus × euramericana cv. I- 72/58, P. deltoides cv. 63-51 and P. deltoides cv. I- 69/55 ) (Hereinafter referred to as 72 Yang, 63 Yang, 69 Yang) as the object, based on the study of the relationship between the properties of poplar wood and the quality of veneer and plywood, the regression index was used to screen the relevant key material indexes and then further simulate Relationship Between Wood Properties of Poplar Plantations and Quality of Veneer and Plywood. The results show that the quality of 72, 63, 69 Yang veneer and plywood on the beach can be multivariate linear regression with the related wood properties. VVT = (VVT) = - 3-414 + 0-063 FW + 0-049 RP-0 (VVT) as a function of fiber width (FW), wood fiber ratio (FP) -033 The model of the RLC at the back of the veneer varies with the wood surface hardness (TH), flexural modulus of elasticity (MOE), air dry density (WD) and volume dry shrinkage (SV) RLC = 9-472 + 0-005 TH + 0-?