The fine field seedlings of Pinus massoniana bred by application of some measures,such as classifying seed,controlling density and cutting root and top reached the qulilty levels.
通过种子分级播种、控制苗木密度、生长期切根与剪顶等综合性的试验研究 ,使马尾松大田苗达到了优质苗的质量指标 :(1)每公顷产优质苗 10 0～ 12 0万株 ,I级苗率达 80 %以上 ;(2 )苗木茎干粗壮 ,高径比为6 0～ 70 ;(3)苗木根系发达 ,冠根比为 4～ 5 ;(4)苗木须根数量多 ,菌根感染率高。
Growth of Different Rhizome Grades of Paris smith polyphylla var.yunnanensis(Fr.) Hand-Mass
云南重楼种苗分级栽培生长情况分析
Application of Sequencing ITS rDNA on Identifcation and Classification of Endophytic Fungi of Vaccinium at Species Level
利用ITS区rDNA分析越橘内生真菌的种级分类
This system puts the top hotels in a special deluxe category.
这种分类法把最高级的旅馆列为特殊豪华级。
grouping by class or kind or size.
根据等级或种类或者大小分组。
For the primary classification of a set of entities, there are three types of decision to be made.
对一组对象的初级分类，要作三种判断。
A taxonomic category ranking below a phylum or division and above an order.
纲一种分类范畴，级别低于门或类，而高于目
Relationship between species and higher taxons in number in Aves
物种与高级分类单元的数量关系——以鸟类为例
Ratings help identify to your users what type of content your site provides.
分级可帮助用户了解您的站点提供的内容种类。
AN APPROACH TO THE RELATIONSHIP AMONG CINNAMOMUM CHEKIANGENSE AND ITS ALLIES
浙江桂及其相近种的亲缘关系及分类等级探讨
A Spam Message Filtering Approach Based on A Two-stage Classifier
一种基于两级分类器的垃圾短信过滤方法
Constant companions are added to the character taxa to form the "characteristic species combination" for associations and higher taxa.
恒有伴生种加特征种构成群丛或更高级分类单位的“特征种组合”。
hosiery classification
袜子分级,袜子分类
Formations are often divided into subordinate community types characterized by their dominant species.
群系可以按其优势物种的特征划分为一些次级的群落类型。
A Class Level Mutant of Object-oriented Program and Its Testing Adequacy;
面向对象类级的一种变异体及其相应的测试充分性
The Two-Level Structure of the Code of Qin and Han Dynasties: Twenty-Seven Chapters of Law in the Er Nian Lü Ling Should All Be Covered by Jiu Zhang;
秦汉律篇二级分类说——论《二年律令》二十七种律均属九章
Distributed Types and Characteristic of Seeding Flora in Baishuijiang National Nature Reserve in Gansu
甘肃白水江国家级自然保护区种子植物属的分布区类型及特征
To arrange or divide into categories, steps, or grades.
分成等级排列或分成类别，步骤或等级
The five-category assets classification for bank loans
贷款质量五级分类办法
Five - category assets classification for bank loans
贷款质量5级分类办法