查询词典 Picea

Based on different treatments that had been used, this paper studied the breeding techniques and annual growth rhythm of the Picea mongolica seedlings.

采用不同做床方式、不同播种密度，夏季苗床不同遮荫方式等方法研究了沙地云杉育苗技术及其年生长规律。

Picea Dietr.; molecular marker ; genetic diversity

云杉属；分子标记；遗传多样性

The growth characteristics of Picea koraiensis stand at age of 10 in Maoershan and Liangshui provenance trials had a positive correlation with longitude, and with increase of tree age to 15 and 19, the tree growth of the provenances displayed a significant positive correlation with latitude as well as altitude.

如帽儿山和凉水试验地种源的生长性状在10年生时与地理经度呈一定的正相关，当试验林达到15和19年生时种源的生长与纬度和海拔出现显著的相关性。

This was identical with spatial distribution pattern. However, the relativity was not evident, baesd on the Mantel test between geographical distance and genetic distance of Picea crassfolia.

但是，对青海云杉各个产地群体的遗传距离与地理距离进一步做Mantel 检验表明，群体的遗传距离与地理距离没有显著的相关性。

In this study, based on the Rnl, extinction coefficient k, transition coefficient of canopy layer stomatic resistance K', aerodynamics resistance ra and rc calculated with the data of Rn, LAI, rsi, the daily transpiration variation of Picea purpurea, Larix principisrupprechtii, Hippophae rhamnoides ,Betula platyphylla and Populus cathayana were studied in Datong County, Qinghai Province. Comparing with the practical transpiration variation measured by Li1600 Steady Porometer, the relative error of this model was less than ±15%, and the results were stabilized and tested by precision analysis.

本研究通过对Rn、LAI、rsi的实地观测，确定了林冠截流净辐射、消光系数、冠层阻力转换系数、空气动力学阻力和冠层整体气孔阻力，对青海大通地区紫果云杉、华北落叶松、沙棘、白桦和青杨的日蒸腾过程进行了模拟，与用快速称重法订正的Li1600稳态气孔仪实测蒸腾结果对比，模拟的相对误差在±15%以内；模型敏感性分析发现，温度、LAI以及rsi是决定模拟结果的主要参数，模型对各参数变化反应不敏感。

Winter buds reddish brown or dull brown, glossy, 8-10 mm; branchlets yellowish brown; seed scales broadly cuneate-obovate or semiorbicular, 1.5-2.5 cm wide

冬芽红棕色或暗棕色，有光泽，8-10毫米；小枝黄棕色；种鳞宽楔形倒卵形的或半圆形，1.5-2.5厘米宽 18 Picea torano 日本云杉

Analyzed the control effects of weeding of 30 %"Feida" roundup soluble powder in nursery. The results indicated that its optimum usage quantity is 3.0 kg/hm2 in the land of Syzygium aromaticum, above 3.7 kg/hm^2 in the land of Picea crassifolia and Sabina przewalskii and the control effect of weed reached over 70%.

分析了在苗圃地使用30％飞达草甘膦可溶性粉剂防除杂草试验，结果表明：使用30％飞达草甘膦可溶性粉剂的最佳剂量丁香苗圃地为3.0kg／hm^2，除草效果可达到80％以上；青海云杉和祁连圆柏苗圃地为3.7kg／hm^2以上，除草效果可达到70％以上。

Eight provenances of 19-year-old Picea koraiensis Nakai from the provenance trials of Maoershan (45°20'N, 127°30'E), Liangshui (47°10'N, 128°53'E) and Jiagedaqi (50°24'N, 124°07'E) in Northeast China were investigated to analyze the genetic variation in growth characteristics and wood characteristics (tracheid length, tracheid diameter, tracheid wall thickness, annual ring width as well as wood density).

以来自中国东北地区帽儿山(45°20'N， 127°30'E)、凉水(47°10'N， 128°53'E)和加格达奇(50°24'N， 124°07'E)的19年生红皮云杉种源试验林8个种源为材料，测定和分析了种源间高生长、径生长和材质性状(管胞长度、管胞直径、年轮宽度和木材密度)的遗传变异。

Generally speaking, both the stand structure and the survival curves of population show that Picea schrenkiana-Dryopteris filix-mas pure stand is in a continuous regeneration.

此外，种群存活曲线总体趋势呈现&凹&型，表明该种群是一个连续更新的种群，在林分生长发育过程主要受到小尺度林冠干扰的影响。

The study of the effect of vegetation on snow ablation can be used to predict the snowline, glacier and water level. The snow ablation is observed in the Picea crassifolia, shrub, frost edge and grassland of sunny slope at the altitudes between 2600 and 2700m from 2003 to 2007. The daily variable of snow depth and the change of snow coverage and the sensible heat flux of snow surface are used to determine the snow ablation at Pailugou Basin of Water Conservation Forest in the Qilian Mountains. The observation began with the snowfall in October and ended at the completely ablation of snow in May, and got 1344000 observation data.

为研究祁连山植被对积雪消融的影响，利用人工调查积雪深度逐日变化量和积雪盖度变化，并结合空气雪面感热通量观测，对祁连山水源林生态站排露沟流域海拔2600~2700 m青海云杉林、灌丛林、林缘、阳坡草地在2003-2007年的积雪消融进行了研究，每年的观测从10月降雪开始到翌年5月积雪消融完结束，共获取数据134 400个。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。