- 更多网络例句与落叶松的相关的网络例句 [注:此内容来源于网络,仅供参考]
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Korean larch will expand northwestward 200 km in 2050yr;and more 200km in 2100yr.
气候变化极大地改变了三种落叶松的适宜分布区。
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According to the observation of the microstructure of small diameter lumber with scan electron microscope, there are many bordered pits of the radial trancheidal wall in the small-diameter Larch, and most of them have pit film. The resin is not only in resin canal, but also in some trancheid and ray parenchyma cells. The drying defects of small-diameter Larch lumbers were the most severe in consecution heating, fluctuating-heats 2h in between, and drying defects were nearly not observed in fluctuating-heats 6h. There is tylosis in the vessel of the heartwood of small-diameter Cathay poplar. The bordered pits of the radial trancheidal wall are dense, and the pits between vessels are alternate, most of them have pit film. Different collapse happened in all the small-diameter Cathay poplar lumbers. The collapse of small-diameter Larch lumbers was the most severe with consecution heating, fluctuating-heats 2h in between, the least with fluctuating-heating 6h.
通过扫描电镜观察发现,小径木落叶松的径壁具缘纹孔数目较多,且多具纹孔膜,小径木落叶松除在树脂道中含有树脂外,在一部分管胞胞腔内以及一些木射线细胞中也含有树脂,在产生缺陷的小径木落叶松锯材中,连续加热方式下锯材的开裂缺陷最为严重,波动2时次之,波动6时几乎没有开裂现象;小径木大青杨心材导管中的层状浸填体含量较多,且径壁具缘纹孔较为密集,管间纹孔呈互列方式,绝大多数纹孔具有纹孔膜,干燥后的小径木大青杨锯材均有不同程度的皱缩现象产生,其中连续加热干燥试验锯材的皱缩现象最严重,波动2时次之,波动6时干燥试验锯材的皱缩缺陷最小。
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The results showed that: The lignin riddance processing with microwave auxiliary was very quick and efficient. And the effect to the hardwood Fraxinus mandshurica samples is better than that to the softwood Larix gmelini.
结果表明,微波辅助法在阔叶材水曲柳和针叶材落叶松的木素脱除方面表现出快速、高效,且对于水曲柳的效果好于落叶松。
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The chemical compositions and pulping properties of Larix kaempferi in different tree ages were investigated.
对不同树龄日本落叶松的化学组成和硫酸盐法制浆特性进行研究与比较。
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Through twenty years study and practice,A program of geneticimprovement of Larix olgensis is put forward,including some detailed suggustionsand plans for future improvement policies of this species.
历经近20年长白落叶松的改良实践,提出了长白落叶松遗传改良的程序及途径,并对今后的改良策略提出了详细的规划及建议。
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In order to supply theoretical basis for the generalization and management of Larix leptolepis, the effects of meterological factors on the growth quantity of Larix leptolepis were studied by step-by-step regression and grey relation analysis based on the data of 15 analytical stem and meterological data of the lastest 20 years in LuanChuan.
在此基础上以豫西伏牛山区日本落叶松人工林为研究对象,以15棵解析木的资料和栾川县近20年的气象资料为研究材料,利用逐步回归法和灰色关联分析法详细研究了10项气象因子对日本落叶松生长量的影响,为日本落叶松的引种和经营管理提供科学依据。
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And Changbai larch(Larix olgensis A.Henry)atdoubled CO2 concentration at seedling stage in growth-chamber and WI,HI of several dorminanttree species in MBKPF(1)Under 700μl·1-1 concentration of CO2,the stem height, stem diameter,main root length,root/shoot ratio and the relative proportions of biomass in root,stem and leaf of the seedlings ofKorean pine and Changbai larch had no significant change.
在700μL·L-1CO2条件下与正常浓度下相比较,在一个生长季后,红松、落叶松幼苗的苗高、地径、主根长、根茎比及生物量在根、茎、叶各器官中比例,差异不显著,对落叶松的侧枝数有影响;在第一、二次试验中,落叶松幼苗的平均每株生物量比在正常CO2浓度下大12.2%、14.2%,而红松幼苗的生物量分别减少3.9%、12.8%;红松、落叶松针叶叶绿素含量以及叶绿素a的相对含量在高浓度CO2下受到影响。
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It was cold on this hillside , and not a flower in the darkness of larches.
在这山坡上,冷气袭人,落叶松的树荫下,并没有一朵花儿。
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After four months of observation of the growth season, the author reveals in the thesis the day- and month-dynamic characteristics of the net photosynthetic rate of Dahurian Larches, which are of different ages, densities and stand classes. The author also compared the net photosynthetic rates of the leaves on different-age braches and with the crowns of different layers and directions. In addition, the author analyzed the effects of some ecological factors on net photosynthetic rate as well.
通过生长季节四个月的定株观测,揭示兴安落叶松的光合特征,即不同年龄、密度、分级木净光合速率的日动态和月动态特征,比较树冠不同层次、不同方向和不同枝龄上针叶的净光合速率的日动态和月动态特征,分析光照强度、温度、CO2浓度等生态因子对兴安落叶松净光合速率的影响。
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Based on the data of Larch in eastern region of Daxinganling,the single entry volume table of Larch is established by using artificial neural networks and regression analysis.
采用大兴安岭东部落叶松Larch的材料,分别运用人工神经网络和回归分析方法编制了落叶松的一元材积表,人工神经网络在拟合过程中以落叶松胸径作为输入向量,以单株材积作为输出向量,并选出既符合林木材积曲线分布规律,又具有较高拟合准确度的网络模型,其网络结构为1∶2∶1,网络对象名为Enet。
- 更多网络解释与落叶松的相关的网络解释 [注:此内容来源于网络,仅供参考]
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hackmatack:落叶松之一种
hackmarack /北美落叶松/ | hackmatack /落叶松之一种/ | hackneyed /不新奇的/常见的/陈腐的/
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larch:落叶松
以植物油为基料的天然木器漆 - 半透明着色 - 不含木材防腐剂 - 防紫外线 用途 木材专用油主要用于保护和装饰户外家具,木格栅,甲板等,适用的材质有柚木(Teak),玉檀(Bangkirai)和其他名贵硬木, 还可用于加压浸渍木,花旗松(Douglas Fir), 落叶松(Larch), 雪松(Ceda
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Coleophora sinensis Yang:华北落叶松鞘蛾
华北落叶松鞘蛾(Coleophora sinensis Yang)取食危害后,树体产生一系列生理生化反应,主要Sullivan等研究发现,被瘤额大小蠹(Dendroctonus frontalis)危害的松树树皮及其水蒸馏物能吸引大量的柄腹茧蜂(Spathius pallidus)和木小蠹长尾金小蜂(Roptrocerus xylophagorum)中红侧沟茧蜂(Microplitis mediator)能够通过气味物质识别
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larchen:落叶松的
larch 落叶松 | larchen 落叶松的 | larchwood 落叶松木材
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Larix:落叶松属
在针叶树种杂交育种中,落叶松属(Larix)和松属(Pinus)杂交育种的成 就最为突出,杂种优势利用的效果最为明显. 欧洲落叶松(L dacidua)与日本 落叶松(L.kaempferi)的杂种、日本落叶松与兴安落叶松(L.gmelinii)的杂种 优势明显,
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Larix olgensis:长白落叶松
中文摘要: 长白落叶松(Larix olgensis)为我国北方重要的造林树种,是制浆造纸的重要纤维原料. 本研究对黑龙江省东北林业大学帽儿山实验林场11个种源长白落叶松的生长性状、木材材质性状、化学....中文摘要: 本文首次开展马尾松不同种源和不同家系未漂硫酸盐法制浆(UBMKP)试验,
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Larix kaempferi:日本落叶松
利用叶绿体微卫星(cpSSR)分子标记对日本国内的7个日本落叶松(Larix kaempferi)群体遗传结构进行了研究.11对cpSSR引物中筛选出的3对多态性引物,共产生10个长度不同片段,
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tamarack:落叶松
<<美洲落叶松>>(Tamarack)旁的<<秋叶>>(Autumn Foliage,画于1916年)总是那么迷人,就是与<<晚霞>>(Sunset, 画于1915年)相比也毫不逊色. 而树木和树林,是唐穆森最宠爱的景物,画笔下经常的主题;即使主题不是树,画中也总有树.
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tamarack:落叶松之一种
tamandua /小形食蚁兽的一种/ | tamarack /落叶松之一种/ | tamarind /罗望子/其果实/
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tamarack:美洲落叶松 (名)
tamale 一种墨西哥烹调; 玉米粉蒸肉 (名) | tamarack 美洲落叶松 (名) | tamarind 罗望子, 罗望子的果实 (名)