母树林

mǔ shù lín
  • Mother forest;maternal (or parent) wood
母树林母树林
  1. 通过对马尾松母树林7a的观测资料分析表明:(1)马尾松花期为10~15d,雌雄球花的散粉期与受粉期大致同步;

    The successive 7 year observation on seed setting habit for Pinus massoniana seed stand was carried out , results show : ( 1 ) Flowering period ranged from 10 to 15 days , but the flowering period of male and female strobilus are overlapped ;

  2. 兴安落叶松母树林丰产型结构的研究

    Study on high yield structure for seed stand of Larix gmelini

  3. 阳新县吴茱萸母树林营建技术

    Construction Technique for Seed Orchard of Evodia rutaecarpa in Yangxin County

  4. 如何在红松母树林内实施计划烧除

    How to implement the prescribed burning in korean pine seed stands

  5. 黄波罗母树林合理经营结构的研究

    Study on the Structure of Management in Seed Forest of Phellodendron amurense

  6. 吴茱萸母树林经济效益分析

    Analysis of Economic Benefits for Seed Forest of Evodia rutaecarpa

  7. 疏伐强度与母树林单位面积产种量相关密切;

    The thinning intensity and seed production per unit area wereclosely interrelated ;

  8. 云南松母树林密度的研究

    A study on the density of seed tree stand of Pinus yunnanensis

  9. 吉林省蛟河市红松母树林改建技术研究

    Research on reconstruction technique of Korean pine seed stand in JiaoHe of JiLin Province

  10. 玄武岩落叶松母树林的生态特点及抚育间伐的效果

    Ecological Characteristics and Tending Thinning Effects of Seed Stands of Larix Gmelinii Growing on the Basalt Tableland

  11. 樟子松天然母树林疏伐强度与种子产量的关系

    The study on the relation between thinning intensity and seed production of the natural Scotch pine seed forest

  12. 青海云杉母树林害虫天敌资源及保护利用

    On the Use and Protection of the Natural Enemies of Insect Pests in the Seed Stands of Picea crassifolia

  13. 进入结实中期(年龄16年以上)的母树林,其种子产量除受结实周期性影响外,还受气象因素的制约。

    In the middle stage of fruiting ( I , e. > 16 years ), seed-bearing cyclicity and climatic elements affect the cone production .

  14. 红松幼苗可见于多种生境,但只在落叶松林、天然更新杨桦林和母树林中有较明显的幼树种群。

    Seedlings can be found in several habitats , while saplings only distribute in Larix plantation forest , Betula-Populus natural regeneration forest , and old-growth pine-hardwood forest .

  15. 优良种子是提高林分质量的重要保障,因此,母树林经营在林业可持续发展中起着重要作用。

    Fine quality seed is a significant gurantee to improve forest stands . In this sense , seed production stand management plays an important role in sustainable development of forestry .

  16. 培育优质黄菠椤用材林的配套技术研究结果表明,采种母树林、种子园、雄性无性系采穗圃其子代遗传增益分别为5%,10%~15%,12.7%~18.5%。

    The results showed that filial genetic gain of parent stand , breeding garden and male clones is 5 percent , 10 ~ 15 percent , 12.7 ~ 18.5 percent respectively .

  17. 利用设置在福建省武平县的马尾松遗传增益测定林材料,以验证优良种源、母树林及种子园混系的现实遗传增益。

    The genetic gain test plantations of masson pine located in Wuping of Fujian ( China ) were used to certificate realized genetic gain of superior provenances , seed stands and clonal seed orchards .

  18. 防护林和特种用途林中的国防林、母树林、环境保护林、风景林,只准进行抚育和更新性质的采伐;

    Among the protection forests and forests with special uses , the national defense forest , the parent stand , the environmental protection forest and the scenic beauty forest can only permit cutting for cultivation and reforestation purposes ;

  19. 通过对华山松人工林不同疏伐强度的多年研究,展示了华山松母树林不同疏伐强度的生长、发育和结实情况,并提出了华山松母树林的合理综合疏伐强度指标。

    Through years of study , the paper describes the growth , development and fruiting of Pinus armandi seed production forests under different thinning intensity , and it also proposes reasonable integrated thinning intensity plan for Pinus armandi seed production forests .