coniferous tree

Study on Fire Resistance of Bark of 3 Coniferous Tree Species

3种针叶树种树皮抗火性研究

A study on Application of Photo-micro Fertilizer In Coniferous Tree Seeding

光肥在针叶树育苗中的应用研究

Preliminary study on Cuttage of four coniferous tree species introduced from abroad

4个国外引进树种扦插试验初报

Effects of Water and Heat Stress on the Needle Sugar Content of Four Coniferous Tree Seedlings

水分和热胁迫对苗木针叶可溶性糖含量的影响

Effects of Nitrogen Deposition on Litter Decomposition of Two Main Coniferous Tree Species in Changbai Mountain

氮沉降对长白山两种主要针叶树种凋落物分解的影响

This coniferous tree has a conical silhouette and thick bark .

这种针叶树为圆锥形，厚厚的树皮。

The soil quality improvement effect of land and coniferous tree is poorer , the effect of grass and deciduous tree is better .

不同植被条件土壤质量变异较大，耕地、针叶林地对土壤质量状况改善效果较差，牧草、阔叶树效果较好。

Made of the easy-to-cut wood of a coniferous tree , as e.g. pine .

由针叶树的容易切割的木材制成的，例如松树。

Douglas fir of coniferous tree and beech of broadleaf tree is selected as the experiment materials .

选择针叶材花旗松和阔叶材山毛榉作为实验材料；

For evergreen coniferous tree species , capability of retaining dust was the strongest , and others was between other two tree species .

花灌木叶面积和单位面积各项功能效益最小，常绿针叶树滞尘能力在三类树种中最强，其他功能及叶面积居中。

Applying of Pisolithus Tinctorius in Growing Saplings of Coniferous Tree in Yulin Wind-Sandy Region

Pt菌根剂在榆林风沙区针叶树育苗中的应用

The Present Situation and Features of the Biological Diversity of Natural Precious and Rare Coniferous Tree Species in Fujian and the Approach to Their Protective and Developmental Problems

福建天然珍稀针叶树种生物多样性现状、特点及保护发展问题探讨

With 2 coniferous tree species and 15 broad leaved tree species as testing material , an air seasoning test of lumber was carried out at Haikou region .

以海南省的2种针叶树材及15种阔叶树材为材料，进行了海口地区板材气干试验。

Therefore , selects suitable afforestation time based on different tree species in northwest of Hubei province , especially plant broad leaf tree in mid October shows the best result and planting coniferous tree can be done in mid-September .

因此，鄂西北地区造林应根据造林树种不同而选择相应的造林时间，尤其是阔叶树种应在10月中旬造林效果最佳，针叶树种造林时间可以提前到9月中旬。

Current , western be current raises Zhi yunsha and other and low coniferous tree on the balcony , they can let indoor be full of the tree that makes person mind Qing Dynasty enrages bright sweet .

目前，西方盛行在阳台上养植云杉和其他低矮的针叶树，它们能让室内布满使人神清气爽的树香。

See from the function results , it is best for deciduous broadleaf tree on the potential of absorbing carbon-releasing oxygen , decreasing temperature and purifying SO2 ; next is fewer shrub and coniferous tree , grass is the worst .

从作用效果来看，落叶阔叶树类的吸碳放氧、降温效果和SO2的净化潜力最佳，其次为花灌木和针叶乔木树种，草类最差。

Large coniferous evergreen tree of North Africa and Spain having flattened branches and scalelike leaves yielding a hard fragrant wood ; bark yields a resin used in varnishes .

具有扁平垂枝和鳞叶的大型香木针叶杉，分布于北非和西班牙；树皮分泌的树脂用于清漆中。

The Choice of Coniferous and Broadleaf Tree for Agro-forestry Ecological System on Taihang Mountain

太行山农林复合生态系统中针阔叶树种的选择

As for the potassium content , the highest was inner forest shrub plants ( 2.22 % ), and the lowest was the coniferous trees of tree layer ( 0.42 % ) .

钾的平均含量乔木层针叶树最低（0.42%），林内灌木层最高（2.22%）。

The evaluation index system and their weight of ecological function for coniferous and broadleaf tree on Taihang Mountain are put forward by using SSMII method , which includes5first-grade indexes and9second-grade indexes .

应用软系统归纳集成法，确定了太行山主要针阔叶树种生态功能的评价指标体系与权重，其中一级评价指标5个，二级评价指标9个。

Tending and thinning timely in upper layers in man-made inducing unevenaged multilayered broadleaved Pinus koraiensis forests could make perpendicular structures of stands rational , proportion of coniferous and broadleaved tree species suitable , and improve growth of trees in each layers and raise productivity of forest land .

人工诱导的异龄复层阔叶红松林，通过适时上层抚育间伐，能使林分垂直结构合理，针阔比例适宜，促进各层林木生长，提高林地生产力。