stem form

These barriers stem form Chinese culture and traditional management practices, which need to be recognized alongside the great economic system transition in China.

在中国，这些障碍来自于中国文化和传统的管理经验，需要对整体的经济体制经行改革。

Approach to drawing up tree-length volume table and commercial volume table by stem form exponent method

用干形指数法编制原条材积表及商品材积表的探讨

Relationship of the relative stem form to crown ratio and mean height for Pinus tabulaeformis

油松相对干形与树冠率及平均高的关系

A formula of stem form curve for Pinus tabulaeformis

油松干曲线式

Application of the Generalized Stem Form Model to the Determination of Chinese Fir Plantation Volume

广义干曲线模型在杉木人工林蓄积量测定中的应用论回溯推理的模态形式

And the order of quality index was health condition, stem form, growing power, tree face quality and fruiting yield.

形质指标的大小顺序是健康状况，干型、生长势、树皮性质和结实等级；

Study on the Stem form Variation and Selection of Paulownia

泡桐干形变异与选择

Effects of crown ratio and mean height on the relative stem form were studied by sample plots and sample trees for Pinus tabulaeformis in main forested region of Shaanxi.

本文用在陕西主要林区调查的油松标准地、标准木材料，就树冠率和平均高对相对干形的影响进行了研究。

Known as Ug99, this new form of stem rust has spread from Ethiopia, Kenya and Uganda over the Red Sea to Yemen.

这种称作Ug99的新型秆锈病已经越过红海，从埃塞俄比亚、肯尼亚和乌干达传到了也门。

A general review of the theory of relative stem form and its application is given based on the variation law of relative stem and normal form factor, calculation of standing volume and standing stock, etc.

本文从相对干形和正形数的变化规律、立木求积、林分蓄积计算等方面，综述了相对干形理论及其应用的研究成果。

Angle between stem and leaf form zoster symmetry distribution about plant stem.

叶方位角在空间上呈带状分布，该区域关于植株对称。

Through the integrated analysis of the survival rate, growth, resistance and stem form of the woods cultivated both in traditional afforestation method and in peg planting method of 21 poplar clones, 5 superior poplar clones suitable for this area were selected.

对21个杨树无性系用钻孔和传统方法造林的成活率、生长量、抗性、干形进行综合分析，筛选出适合本地区生长的5个优良杨树无性系。

Study on Effect of Stand Density on Tree Stem Form of Slash Pine

林分密度对湿地松林木干形影响的研究

Surface Area Models of Standing Tree Stems by Relative Stem Form Method

用相对干形法建立立木树干表面积模型的研究

Genetic Analysis on Combining Ability of Growth, Stem Form and Wood Basic Density of Pinus massoniana by testcross mating design

基于马尾松测交系子代的生长、干形和木材密度GAC/SCA分析

Researchers at the University of Edinburgh created the organs by manipulating stem cells – early cells which are the building blocks of the body – to form the structure of a kidney.

爱丁堡大学的研究者通过培养干细胞获得具有肾脏结构的器官。干细胞是用于构建机体的早期细胞。

A Generalized Stem Form Model for Chinese Fir Plantation

杉木人工林广义干形模型的研究

Studies on the stem form and taper of black locust clonal plantations

刺槐无性系人工林干形与削度研究

Important for human and animal food; growth habit and stem form similar to Indian corn but having sawtooth-edged leaves.

人类和动物的重要食物；生活习性和茎的形状类似于印度玉米但具有锯齿状边缘的叶子。

Seven elite trees are selected based on the DBH growth and the stem form.

以胸径生长量和干形作为选择指标，从东部黑核桃优良家系中选出速生、干型好的优树7株。

Study on the stem form of Pinus massoniana and estimation of Standing Volume

马尾松树干干形及材积估测的研究

Green-pruning could also effectively control the length of knots on wood, reduce tree taper, improve the proportion of clear wood and the under branch height, so that to improve the stem form and quality.

人工修枝还能有效地控制木材中节子的长度，提高杉木无节材比例，同时减小尖削度，提高枝下高，使杉木干形更趋近于通直圆满。

The advances of Paulownia stem form Cultivation Research

泡桐干形培育研究进展

In, order to tap adequately the potential of stem form improvement and to provide theoretical foundation for mult-generation breeding, the possibility of selecting indirectly for stem form from the tree crown structure was studied.

为了充分挖掘干形改良的遗传潜力和为多世代育种提供理论依据，探讨了从树冠结构方面对干形实行间接选择的可能性。

Research on the Genetic Variation of New Clonal Stem Form Traits in Populus Deltoides

美洲黑杨新无性系干形性状遗传变异初步研究

The phenotypic of leaf, growth traits and stem form traits are all normal distribution, which indicate that they are controlled by polygons.

叶片形态、生长性状、干形性状表现型分离均呈正态分布，表明他们均由微效多基因控制。

For example, some stem cells form cardiac muscle.

举例来说, 有些干细胞形成心肌.

Ginger lotus flower bud shoots in the terminal bud, flowering at the same time, stem base hypertrophy gradually to form a round ball to the cone-shaped new bulb.

姜荷花新芽在顶芽花芽分化、开花的同时，茎基部逐渐肥大，形成圆球状至圆锥状的新球茎。

Preliminary study of the principal component of stem form for hardwoods

阔叶树干形主要成分的初步研究

Result showed that different waterlogging depths have obvious effects on tree height, diameter at breast height, under branch height, trunk morphological structure, stem base form, and growth process.

结果表明：不同水分条件对池杉的树高、胸径、枝下高、干形、树干基部形态及生长过程均产生明显的影响。