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国家林业局日前发布公告,对2004年12月由国家林业局林木品种审定委员会审定通过的廊坊杨1号等林木品种进行了公告,笔者筛选出了适合我省种植的10个林木良种,现将这10个林木良种介绍如下:一、孟滦华北落叶松种子园种子1、品种特性:遗传性状稳定,树干通直,材积遗传增益为19.36～23%;种子千粒重5.8g。2、栽培技术要点:不窝根,挤紧苗,深浅适宜,不露红皮,初植密度每亩330株为宜。3、适宜种植范围:冀北山地海拔800米以上地区,燕山地区、太行山区、内蒙南部,甘肃东南部等地区。二、廊坊杨1号1、品种特性:有水肥条件的沙壤土生长,株行距4m×4m,6年生林木平均胸径生长量为4.4cm,年均高生长量3.0m,年均材积生长量0.0565m~3;木才基本密度0.379g/cm~3,纤维长度1.0638mm;胶合板测试,胶合强度为83%,含水率6%。2、栽培技术要点:造林前苗木根系要保湿,根部浸泡
State Forestry Administration recently issued a public notice on December 2004 by the State Forestry Administration Forest Variety Approval Committee approved Langfang Yang No. 1 and other forest species were announced, the author selected for the cultivation of 10 trees in our province, now The 10 forest varieties introduced as follows: A, Meng Luan North China larch seed orchard seed 1, variety characteristics: stable genetic traits, tree trunk straight, the genetic gain of 19.36 to 23% of the material; seed thousand weight 5.8g. 2, cultivation techniques: not nest, squeeze tight seedlings, suitable depth, without revealing red, initial planting density of 330 plants per acre is appropriate. 3, suitable for planting range: northern Hebei mountains above 800 meters above sea level, Yanshan area, Taihang Mountains, southern Inner Mongolia, southeastern Gansu and other regions. Second, the Langfang Yang 1 1, the characteristics of varieties: sandy loam soil conditions with water and fertilizer growth, plant spacing 4m × 4m, 6-year-old tree average DBH growth of 4.4cm, average annual growth of 3.0m, annual volume growth of 0.0565m ~ 3; wood was the basic density of 0.379g / cm ~ 3, fiber length 1.0638mm; plywood test, the bonding strength of 83% moisture content of 6%. 2, cultivation techniques: seedlings before reforestation root moisturizing, root soaking