免費成人影片

  • <tr id='wszcnG'><strong id='wszcnG'></strong><small id='wszcnG'></small><button id='wszcnG'></button><li id='wszcnG'><noscript id='wszcnG'><big id='wszcnG'></big><dt id='wszcnG'></dt></noscript></li></tr><ol id='wszcnG'><option id='wszcnG'><table id='wszcnG'><blockquote id='wszcnG'><tbody id='wszcnG'></tbody></blockquote></table></option></ol><u id='wszcnG'></u><kbd id='wszcnG'><kbd id='wszcnG'></kbd></kbd>

    <code id='wszcnG'><strong id='wszcnG'></strong></code>

    <fieldset id='wszcnG'></fieldset>
          <span id='wszcnG'></span>

              <ins id='wszcnG'></ins>
              <acronym id='wszcnG'><em id='wszcnG'></em><td id='wszcnG'><div id='wszcnG'></div></td></acronym><address id='wszcnG'><big id='wszcnG'><big id='wszcnG'></big><legend id='wszcnG'></legend></big></address>

              <i id='wszcnG'><div id='wszcnG'><ins id='wszcnG'></ins></div></i>
              <i id='wszcnG'></i>
            1. <dl id='wszcnG'></dl>
              1. <blockquote id='wszcnG'><q id='wszcnG'><noscript id='wszcnG'></noscript><dt id='wszcnG'></dt></q></blockquote><noframes id='wszcnG'><i id='wszcnG'></i>

                [1]賈艷梅,史社強,席艷蕓,等.榆林沙區班克松物候及年生長規律觀測[J].陜西林業科技,2019,(02):39-41.
                 JIA Yan-mei,XI Yan-yun,WANG Hai-ying,et al.Observation on Phenology and Annual Growth Rhythm of Pinus banksiana in Yulin Sandy Land[J].,2019,(02):39-41.
                點擊復制

                榆林沙區班克松物候及年生長規律觀測()
                分享到:

                《陜西林業科技》[ISSN:1006-6977/CN:61-1281/TN]

                卷:
                期數:
                2019年02期
                頁碼:
                39-41
                欄目:
                試驗與調【查研究
                出版日期:
                2019-04-25

                文章信息/Info

                Title:
                Observation on Phenology and Annual Growth Rhythm of Pinus banksiana in Yulin Sandy Land
                文章編號:
                1001-2117(2019)02-0039-03
                作者:
                賈艷梅史社強席艷蕓王海鷹王建梅王 琪
                陜西「省治沙研究所,陜西 榆林 719000
                Author(s):
                JIA Yan-mei XI Yan-yun WANG Hai-ying WANG Jian-mei WANG Qi
                Shaanxi Institute for Sand Control, Yulin, Shaanxi 719000
                關鍵詞:
                班克松 物候 年生長規律
                Keywords:
                Pinus banksiana phenology annual growth rhythm
                分類號:
                S722.7
                文獻標誌╲碼:
                A
                摘要:
                對榆林沙區2009年引種栽培的班克松進行了連續3年※的物候及年生長規律觀測。結果表明:班克松在一道紫氣直接沒入了那綠袍小孩之中榆林沙區4月卐上旬芽膨大,4月下旬至5月下所有人都感到了這股恐怖旬主梢、枝生長旺盛,年平均〖生長量主梢47.7 cm、側枝19.9 cm,6月中下旬芽完全形成。4月底至6月中【旬針葉生長,平均2.63 cm。雄球花5月初散粉高峰○期,雌球花4月底5月初授粉。5月上中旬幼果形〖成,二年球果4月底至5月底生※長迅速,平均縱徑34.15 cm,橫徑17.13 cm,9月中旬球果成熟。
                Abstract:
                The phenology and annual growth rhythm of Pinus banksiana introduced and cultivated in Yulin sand area in 2009 were observed for three consecutive years. The results showed that the buds expanded in early April, the main shoots and branches grew vigorously from late April to late may, the average annual growth was 47.7 cm at the main tips and 19.9 cm at the side branches, and the buds were fully formed in mid-late June. Leaves grew from the end of April to the middle of June, an average of 2.63 cm. The pollen released in peak in early May and pollination of female flowers occurred in late April to early May. The young fruits were formed in the early and middle of May,and the two-year cones grew rapidly from the end of April to the end of May, with an average longitudinal diameter of 34.15 cm and a transverse diameter of 17.13 cm. The cones matured in the middle of September.

                參考文獻/References:

                [1] 潘誌剛,遊應天.中國主■要外來樹種引種栽培[M].北京:北京科學︾出版社◤,1994.
                [2] 王騫春,劉紅梅,崔立明.遼寧省班克松物候及生長№規律觀察初報[J].遼寧林業科◎技,2009(4):39-40.
                [3] 史社強,楊 濤,劉喜東,等.毛烏素沙地班克松引種育苗及造林技術研究[J].林業科技,2016,41(4):17-19.
                [4] 笠可禎.物候學[M].北京:科♂學出版社,1973.
                [5] 宛敏渭,劉秀珍.中國々物候觀測方法[M].北京:科學出版社,1979.
                [6] 任憲威,劉秀珍,李珍.北■京樹木物候研究[J].北京林業大學□學報, 1983(1):1-7.
                [7] 陳紹安,陳宏偉,唐社雲,等.普文對轟試驗林場思茅松無性系種子園10年生植株的物候觀測[J].西部林業科學↓,2009,38(1):120-123.

                備註/Memo

                備註/Memo:
                收稿日期:2019-02-16
                基金項目:中央財政林業科技推廣示範項目“優良生態固沙針葉樹種彰武松、班克松擴繁及造林◥技術推廣示範”[2015]03號。
                作者簡介:賈艷梅(1966-),女,陜西榆林人,高級鄭雲峰帶著眾人急速閃身進來工程師,主要從事防沙治沙研究及推廣工作。
                更新日期/Last Update: 2019-04-25