coniferous tree
- 针叶(松柏)树
![coniferous tree](../cache/509277.jpg)
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Study on Fire Resistance of Bark of 3 Coniferous Tree Species
3种针叶树种树皮抗火性研究
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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
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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
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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
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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
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This coniferous tree has a conical silhouette and thick bark .
这种针叶树为圆锥形,厚厚的树皮。
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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。
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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。
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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;
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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。
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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
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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
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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。
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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。
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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。
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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。
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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。
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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
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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%)。
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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。
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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。