| 释义 |
pic·ea AHDˈpisēə,ˈpīs- COCA¹¹³⁸⁹⁴BNC¹²⁶⁴¹⁶⁺⁴
基本英英例句例句
云杉属
Noun:
a genus of temperate and Arctic evergreen trees see spruce
名词100%
Future application and research directions on somatic embryogenesis inPiceaspecies are also recommended.并展望了云杉属树种体细胞胚胎发生的应用前景及研究方向。 A new variety of Picea Dietr.
文章题目云杉属一新变种。 www.cvh.org.cn
In this work main chemical changes between green wood and air dried wood, heartwood and sapwood in their extractives of Picea jezoensis var. komarovii and Abies nephrolepis are studied.
研究长白鱼鳞云杉、臭冷杉的木材及其抽出物化学组成，并分析生材与气干材、心材与边材中各种化学组成变化的规律。 cnki
It is suitability that picea koraiensis divides species source by the geographical positions and climate condition.
对红皮云杉按地理位置和气候条件进行种源划分是适宜的。 cnki
It mainly attacks Picea jezoensis and causes a white rot of root and butt.
该病主要发生于成熟林分，造成干基特别是根部腐朽。 dictall
Surface Pollen content of Picea is corresponded with its coverage in community;
云杉的花粉百分含量与植物在群落中的盖度基本符合； cnki
The biological and ecological characteristics as well as habitat condition of Picea sitchensis have been briefed; meanwhile the study direction of its species introduction has been advanced.
简要介绍了西加云杉的生物生态学特性及其生境条件，并提出了该树种引种的研究方向。 cnki
The morphology and cytohistology of somatic embryogenesis in Picea species.
云杉属树种体细胞胚胎发生的形态学和细胞组织学研究。 cnki
The phenotypic characters of Heigqingqian and Baiqingqian are almost remarkable or extreme correlation; while those of Mayisong and Picea carassifolia are not very extreme correlation.
白青杄和黑青杄的表型性状间大多数呈极显著或显著相关，麻衣松和青海云杉的大多数表型性状间相关性不显著。 airiti.com
The size class of Picea schrenkiana var. tianschanica population is a typical pyramid shape, with distribution in each class. Seedlings in this area are abundant, accounted for25.37%.
天山云杉种群大小级结构呈正金字塔型，各级均有分布，幼苗占25.37%，储备量丰富。 cnki
The soil porosity and moisture content of Picea crassifolia community and Picea crassifolia community are increasing with the increase of converted years, and on the whole present a growth trend.
青海云杉群落、白桦群落土层孔隙度和持水量状况随退耕还林年限增加，大体呈增长趋势。 fabiao
Because of the rampant outbreaks serious harmfulness of seed insects, the quantity and quality of picea crassifolia seed have reduced largely, which badly influences the ecological ruction of forest.
青海云杉由于种实害虫的猖獗发生和严重危害，致使种子的产量和质量大幅度下降，严重影响着林业生态建设。 cnki
Besides, pollen of Abies, Picea, Pinus, Tsuga, Betula, Ericaceae, Labiatae and Cyperaceae and spores of Pteris, Polypodium and Selaginella were also observed.
此外，有冷杉、云杉、松、铁杉和桦等属乔木花粉和杜鹃科、唇形科、莎草科灌木和草本植物花粉及凤尾蕨、水龙骨、卷柏等属孢子。 cnki
In remote antiquity, trees of Picea, Abies and Larix were the principle compositions of the mixed broadleafconifer forests in Tianmu mountain area.
在远古时期，云杉、冷杉和落叶松是天目山区针阔混交林的主要组成树种。 cnki
Pure planting Picea koraiensis had highest net photosynthetic rate at medium W and medium-low P, highest transpiration rate at medium- low P, and highest WUE at low W and medium-low P.
混栽云杉则在中 W、中高 P肥水平下净光合速率最高，在高 W、中高 P肥水平下蒸腾速率最高，在低 W、中高 P肥水平下 WUE最高。 fabiao
So understanding the genetic diversity of Picea crassfolia is of significance to protect the germplasm resources and breeding work in the future.
因此了解青海云杉的遗传多样性对其种质资源的保护以及今后的遗传育种工作具有重大的指导意义。 cnki
The results have shown that the Picea brachytyla population is a declining population, its age structure is a reversed pyramid model, and the most trees are distributed between80 and140 years.
结果表明：麦吊云杉种群为一衰退种群，龄级结构呈倒金字塔模型，集中分布于80年至140年之间； cnki
The results show that the intraspecific competition of Picea crassifolia is more intensive than its interspecific competition with other species of accompanying trees;
结果表明：青海云杉种内竞争较之与伴生树种间的竞争剧烈； www.gsau.edu.cn
The results showed that intraspecific competition intensity of Picea jezoensis reduced with increase of diameter scale of trees.
结果表明：暗针叶林中鱼鳞云杉种内竞争强度随着林木径级的增大而迅速减小。 cnki
This paper reports in vitro rejuvenation and vegetative propagation of plus Sitka spruce Picea sitchensis trees.
本文报导西加云杉优树离体复壮与无性繁殖。 cnki
Picea and abies forests in Taohe forest region have been investigated in order to find out the laws governing their structure, growth, rejuvenation and succession.
在对洮河林区云杉、冷杉林分调查研究的基础上，探讨现实林分的结构、生长、更新、演替等规律。 cnki
Picea is not only major natural forest resources in Qinghai, but also fine tree species of afforestation and urban greening.
云杉是青海省县主要的天然林资源，也是荒山造林和城镇绿化的优良树种。 qikan120 |