1) planting density
初植密度
1.
Effects of planting density on tree growth and wood quality and modeling the wood quality of Populus×xiaohei.;
初植密度对小黑杨人工林生长和材质的影响以及材质评价模型的建立
2.
Planting density has significant effects on fiber morphology, physical and chemical properties of Lalix olgensis wood.
初植密度对落叶松人工林的纤维形态特征、物理特征及化学特征有重要的影响 ,除生长轮宽度外 ,其它各指标差异显著 ;初植密度为 2 。
2) initial density
初植密度
1.
Based on the experimental forest of 5 kinds density set up during Eighth Five-year-plan period,the influence of initial density on Larix kaempferi growth and economic performance was studied.
结果表明:平均胸径、树高、单木材积和冠幅均表现出随初植密度减小而增大的趋势,单位面积蓄积量和枝下高则表现出随初植密度增大而增加的趋势,净现值(NPV)、效益成本比(BCR)和内部收益率(IRR)也表现出随初植密度的增大而增加的规律性;初植密度除了对15 a生日本落叶松单位面积蓄积量有极显著影响外,对其它生长量的影响均不显著。
2.
Based on comprehensive analysis of various factors, the initial density in the planting should be controlled below 2 000 trees.
综合各种因素,确定蒙古栎造林的初植密度不能低于2 000株·hm-2。
3) initial planting density
初植密度
1.
A provenance-by-planting density-interaction trial of masson pine at age nine on mid-fertility field in Wuping of Fujian was used to investigate growth response pattern of five superior provenances to initial planting density.
在马尾松中心产区之一的闽西地区,利用5个马尾松优良种源在肥力中等立地上设置的种源与密度互作9年生试验林测定材料,初步研究优良种源生长对初植密度的反应式样和互作效应。
4) optimum first planting density
最适初植密度
1.
Based on this model the optimum first planting density of Larix kaempferi(Lamb.
利用模型提出了以生产纸浆材、小径材为目的的豫西日本落叶松人工林的最适初植密度是 2 0 0 0～ 2 5 0 0株·hm-2 ,以生产中径材为目的是 110 0～ 15 0 0株·hm-2 。
5) initial density
初始密度
1.
Population process of Aphis gossypii with different initial density.
不同初始密度棉蚜种群动态过程
2.
ulphate salty soil under the condition of certain initial density, water contentand salt content, the salt heave process has certain regularity with the change of temperature.
硫酸盐渍上在一定的含盐量、含水量、初始密度条件下随温度变化所表现出的盐胀过程有一定规律性。
6) planting density
栽植密度
1.
The planting density showed little impact on sapwood width,while it had highly significant effects on wetwood width.
以山西朔州地区的人工林小黑杨为研究材料,研究不同栽植密度(2 m×5 m、4 m×5 m、4 m×10 m)对小黑杨边材、湿心材生长量的影响。
2.
The results indicated that the effects of planting density on crown width,crown length,DBH,wetwood areas,sapwood areas,wood basic density,compression strength parallel to grain and MOE were highly significant,and those effects on wetwood proportional,sapwood proportional and MOR were significan.
Hvang et Liang)人工林为试验材料,研究了3种栽植密度(1000、500、250株。
3.
Taken Armeniaca sibirica forests in western region of Liaoning province as research objects,growth status and soil amelioration effect of Armeniaca sibirica forests under the condition of different densities were compared by the means of variance analysis and multiple comparison, and the optimum planting density of Armeniaca sibirica forests at different ages were chosen.
以辽西地区山杏林地为研究对象,利用方差分析及多重比较的方法比较不同密度条件下山杏林生长状况和改土效益的差异,从而得出不同林龄山杏林最佳的栽植密度。
补充资料：袭美初植松桂偶题
【诗文】：
轩阴冉冉移斜日，寒韵泠泠入晚风。
烟格月姿曾不改，至今犹似在山中。
【注释】：
【出处】：
全唐诗：卷628-22
轩阴冉冉移斜日，寒韵泠泠入晚风。
烟格月姿曾不改，至今犹似在山中。
【注释】：
【出处】：
全唐诗：卷628-22
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条