馬尾樹 的英文怎麼說
中文拼音 [mǎwěishù]
馬尾樹
英文
rhoiptelea chiliantha-
Ring tail lemur hides among leaves at the lemurs park, a private eco - tourism enterprise near antananarivo, madagascar
馬達加斯加首都塔那那利佛附近一家私人狐猴公園中，一隻表情生動的卷尾狐猴隱身在樹叢中。A ring tail lemur hides among leaves at the lemurs park, a private eco - tourism enterprise near antananarivo, madagascar
馬達加斯加首都塔那那利佛附近一家私人狐猴公園中，一隻表情生動的卷尾狐猴隱身在樹叢中。Guozhen pine pollen growth in the country is a unique selection of masson pine pollen species as raw material health treasures from the scientific formula
國珍松花粉是選用生長於我國的特有樹種馬尾松之花粉為主要原料，經科學配方而成的保健珍品。Niche breadth of four dominate populations at three age groups was studied by the methods of resource utilization ability and ratio. the result shows that : symplocos sectchuanensis is a typical gengeration species whi ch resource utilization ability is strong, and distribution is wide. meanwhile, go rdonia acuminata, castanopsis fargesis and pinus massoniana specialized at some d egree in resource utilizationm, their distribution is limited. especially, the ju venile of pinus massoniana specialized outstandingly. with the devlopment of pinu s massoniana, which is the pioneer population in mt. jinyun, the environment become s unfit to it ' s juvenile. it turns to needle and evergreen broad - leaves mixed fo r est. because the tolerance toward shading of gordonia acuminata is lower than tha t of castanopsis fargesis, gordonia acuminata will be substituted by castanopsis fargesis and other evergreen broad - leaves species are the edificators. the popul ation ' s ability of resource utilization is the inner factor of population distri bution and community succession. the distribution of light and the concentrate of nutrient ( such as n ) is the outer factors of community succession
對縉雲山森林植被的4個優勢種群3個年齡級生態位寬度進行了研究.結果表明，川灰木利用資源的能力最強、分佈廣，為典型的泛化種.大頭茶、栲樹、馬尾松對資源的利用在一定程度上特化，分佈上有一定的局限性.馬尾松的中齡組與幼齡組特化現象十分顯著.縉雲山森林植被的先鋒種馬尾松的發展，導致環境的改變不適于其幼齡個體的生長，群落演替到針闊葉混交林階段，最後發展為以栲樹等為建群種的常綠闊葉林.種群的資源利用能力，是種群分佈與群落演替的內在原因，光因子和營養元素（如n ）是群落演替的主要外部動力The number of major 18s rdna sites is generally much more than that in angiosperms and varies markedly among pines. there are seven pairs of 18s sites in pinus tabulaeformis, five in p. desata, eight in p. yunnanensis, 10 in p. massoniana, six in p. latteri, three in p. bungeana, and ten for p. armandi
其中主要位點數目，油松有7對，高山松5對，雲南松8對，馬尾松10對，南亞松6對，白皮松3對，華山松10對，平均在7對；另外，部分松樹還存在弱位點。The experimental results show that the characters of tree height, dbh, and volume, etc. of every family progenies of pinus massoniana seed orchard are all evidently higher than those of control ( ck ), 7 fine family materials whose volume growth exceeds the control ' s by 50 % are totally selected as the materials for building p. massoniana improved seed orchard and industrial raw material forest
摘要對漳平五一國有林場馬尾松種子園18個初選家系進行子代測定，採用隨機區組設計、 8次重復，對6年生的樹高、胸徑、材積等性狀進行測定，試驗結果表明：馬尾松種子園各家系子代均明顯高於對照（ ck ） ，共選出7個優良家系材積生長超過對照50 %以上材料，作為營建馬尾松改良種子園和工業原料林的材料。The woodland of minjiang river watershed was classified as forest land, shrub land, open woodland and other woodland and the forest land was classified as land of chinese fir, land of pinus massoniana, land of broadleaf, land of bamboo and land of commercial forest in this paper
摘要將閩江流域林地劃分為有林地、灌木林地、疏林地和其他林地，並將有林地劃分為杉木林、馬尾松林、闊葉樹林、竹林和經濟林。Through the stand investigation by setting up the sample site, the investigation results showed that the average dbh of 15 - year - old alniqhtllm fortunei planted under nature was 60 % larger than that of 17 - year - old pinus massoniana plantation under the same condition, the average tree height of the above was 38 % larger than that of the latter, the average single - tree volume of the above was 3. 2 times higher than that of the latter, the above showed the absolute dominance in stands
摘要設立標準地進行林分調查，在標準地中選取擬赤楊標準木進行樹干解析，採用生長對比方式分析擬赤楊在馬尾松人工林中的生長情況，調查結果表明，在同一環境條件下， 15年生天然下種的擬赤楊比17年生馬尾松人工林平均胸徑大60 % ，平均樹高高38 % ，平均單株材積大3 . 2倍，在林分中表現出絕對優勢。The horses, unseen before, were visible to the tails now, and through the leafless boughs there could be seen a watery light
先前看不清的馬，現在連尾巴都看見了，從光禿的樹枝中，透露一片水光。Genetic variations in different levels of masson pine ( pinus massoniana lamb. ) in main traits were studied on the basis of the 12 - year - old data of provenance tests at 7 test locations and the 11 - year - old data of plus progenies at 2 test locations, and the index and strategy in different variation levels on selection breeding for pulpwood in masson pine was also discussed
以7個試驗點12年生馬尾松種源試驗林及2個試驗點11年生優樹子代測定林為基礎材料，在研究馬尾松主要性狀不同層次遺傳變異的基礎上，對馬尾松制漿造紙材良種選育目標及在不同變異層次的選擇策略進行了探討。Preliminary study on the water - conservation functions of mixed plantations between pinus massoniana and broad - leaved trees
馬尾松與木蘭科幾種闊葉樹混交后水源涵養功能的初步研究Dynamics of soil no3 - - n and its response to n additions in the major forests ( pine, mixed and monsoon evergreen broadleaf forests ) of dinghushan biosphere reserve were studied by using ion - exchange resin bags method
用離子交換樹脂袋法，研究了鼎湖山三種森林（馬尾松林、馬尾松針葉闊葉混交林和季風常綠闊葉林）土壤硝態氮對外加氮的響應特徵。These results indicated the differences among the interfacial properties of wood / plastics composites formed by different species wood. they approved the chinese fir wood / plastics composites has the highest interface strength, the second one is the poplar wood and the masson wood has the lowest interface strength
摘要這一結果顯示了不同樹種木材所形成的木塑復合材料的界面性能有著較大差異，即杉木與塑料形成的木塑復合材料的界面結合強度最高，楊樹木材次之，馬尾松最低。In this paper, three main tree species wood planted in our country, poplar, chinese fir and masson pine are chosen as the research materials. their wood surface identities, the forming process of the wood - plastics interface, and the relativity of the influence factors to the wood - plastics composite properties are studied
本文以我國人工林主要樹種楊樹、杉木和馬尾松木材為主要研究對象，從人工林木材的表面特性研究入手，探索木材與塑料復合界面的形成過程，研究木塑復合材料性能的主要影響因子。Furthermore, weak signals are found on the centromeres of many chromosomes. unlike 18s, pines have 1 - 2 pairs of 5s rdna sites, except for p. armandi that has four pairs. each pine could be discriminated by its rdna fish karyotype, although most of these pines cannot be distinguished by traditional karyotype analysis
除了華山松ssd3na有旱對位點，馬尾松只有1對位點外，其它松樹的ssrizna位點數目均為2對， 、並且在雙維管柬亞屬植物中有一對屬於弱位點。分享友人