| 马尾松球果和种子的生长发育及养分动态* |
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| 引用本文： | 王培蒂,秦国峰.马尾松球果和种子的生长发育及养分动态*[J].林业科学研究,1995,8(1):14-19. |
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| 作者姓名： | 王培蒂 秦国峰 |
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| 作者单位： | 中国富阳林业科学研究院亚热带林业研究所 |
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| 基金项目： | “八五”国家科技攻关课题 |
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| 摘 要： | １９９０～１９９３年连续４ａ，对马尾松球果和种子的生长发育与养分动态，进行了比较系统的分析研究。结果表明：（１）马尾松球果系２年成熟，授粉（４月上旬）后当年为幼球果形成期；第２年受精前的６月至以后的９月中旬为球果迅速生长期，９月下旬至１０月为球果成熟期。（２）在２年生球果生长期间，球果干物质不断增加，而水分含量逐渐减少，１０月底干物质与水分的含量达到平衡点。（３）球果养分的含量，ｌ年生球果幼期Ｎ＞Ｋ＞Ｐ，三者变化趋势近乎一致，２年生球果含Ｎ量明显下降。种子内的Ｎ、Ｋ含量在７月中两者相当，此后Ｎ含量上升直至成熟期，到１０中Ｋ与Ｐ的含量相近。（４）胚胎发育进程中，球果和种子的体积与养分含量在原胚和幼胚阶段（７月至９月中旬）的变化最大，以后渐趋平缓。
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| 关 键 词： | 马尾松，球果一种子，生长发育，养分动态 |
| 收稿时间： | 6/6/1994 12:00:00 AM |
Growth and Nutrition Developmemt of Seed and Cone of Masson Pine |
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| Wang Peidi and Qin Guofeng.Growth and Nutrition Developmemt of Seed and Cone of Masson Pine[J].Forest Research,1995,8(1):14-19. |
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| Authors: | Wang Peidi and Qin Guofeng |
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| Institution: | The Research Institute of Subtropical Forestry, CAF Fuyang, Zhejiang 311400;The Research Institute of Subtropical Forestry, CAF Fuyang, Zhejiang 311400 |
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| Abstract: | The growth and nutrition development of seed/cone of masson pine werestudied systematically during four years from l990 to l993.The results were as follows :(l)The cones of masson pine need two years to ripen.Formation period of young cone wasthat year after pollinating(in the first ten-day of April),rapid growth period was from June(before fertilizing)to the second ten-day of September in the second year,and riping periodwas from the last ten-day of September to October;2)In the growth period of 2-year-oldcone,dry substance weight increased and water content decreased gradually.Both arrived atbalance point at the end of October,i.e. before the end of October the water weight surpassed the dry substance and while after the end of October the dry substance surpassed thewater;(3)During the development of one-year-old cone,the change of N,K and P contentis similar to each other,and the N content of 2-year-old cone decreased gradually to be similar to the K content.N and K content of seed are matched in July. Since then N content decreased tiil riping period and was similar to P content in the second ten-day of October;(4)During the procedure of embryo development,the change of volume and nutrition content ofseed/cone were the greatest in the stage of proembryo and young embryo and then tended tolevel off gradually. |
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| Keywords: | masson pine seed/cone growth and development nutrition |
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