林木生长量

  • 网络tree increment
林木生长量林木生长量
  1. 不同发育阶段影响林木生长量的主要土壤磷形态是全磷、有机磷、有效磷、无机磷总量、Ca-P和Fe-P。

    Main types of phosphorus which affecting tree increment in different stages were total P , organic P , available P , total inorganic P , Ca-P and Fe-P.

  2. 整地与栽植深度对林木生长量影响的研究

    Effect of Soil Preparation and Planting Depth on Growth of Stand

  3. 落叶松土壤有机磷形态与林木生长量的关系

    Relationship between soil organic phosphorus forms in larch plantations and tree growth

  4. 瘠薄河滩地整地质量与林木生长量影响的分析

    Analysis of Site Preparation Quality of Poor Overflow Land and its Effect on Growth of Stand

  5. 选用2年生容器苗在阳坡造林可提高林木生长量;

    To select south slope and vessel seedling of 2-year-old could improve growth increment of the P.nigra .

  6. 结果表明:施肥能不同程度地提高林木生长量和光合能力,落叶松人工林不同代林地所需养分是不同的。

    The results showed fertilization could improve the difference in the forest 's growth amount and photosynthetic capacity .

  7. 浙江省定点封山育林林木生长量生长率调查初报

    Preliminary Investigation Report on Wood Increment and Growth Percent in Fixed Regions for Closing Hillsides to Facilitate Afforestation in Zhejiang Province

  8. 最后,选取单株林木生长量、单位面积净初级生产力和蓄积量的增长量三个判据,对不同群落结构进行了最优化评价。

    Meanwhile , three criterions are taken , yield of Signal tree , net primary productivity of unit area and total storage of stand to evaluate different communities .

  9. 在地下水位浅、土壤盐渍化程度严重的地区,采用筑台地造林,其成活率可高达90%,造林5年后即可郁闭成林,林木生长量为一般造林地的2倍。

    In a district with low ground water level and serious alkali-saline soil , the survival rate of forestation can reach up to 90 % by use of building terrace .

  10. 把对林木生长量有直接关系的形质指标,作为单株评价的一部分,考虑在单株选择之中,作为提高单株选优质量和准确性的根据。

    The morphological index when correlated linearly with tree growth in single tree evaluation of plus trees selection is thought to be a basis for increasing accuracy and quality of selected trees .

  11. 结果表明,利用科学的灌溉阈值,抓住关键的灌溉时期,确定有效的灌溉范围和经济的灌溉量,就可以较少的水分投入获取较高的林木生长量。

    The results showed that it could get more growth of trees with less water and achieve water saving irrigation by means of scientific soil moisture threshold and taking the key season and define the effective range and economic quantity for irrigation .

  12. 所生产出的良种已应用于生产性造林。营造的云南松林不仅保存率高,直纹株率达83.3%,而且林木生长快,生长量大。

    The Pinus yunnanensis forests not only have the high preserve percentage and straight grain percentage of 83.3 % , but also have the fast growth and large growth .