mother tree是什么意思

用法例句

Pruning effects on blooming quantity of seed trees in clonal seed orchard of Pinus koraiensis;

修剪促进红松无性系种子园母树开花效应研究

Fertilizing effect on bearing fruit of seed tree in clonal seed orchard of Pinus koraiensis;

施肥对红松无性系种子园母树结实效应研究

For the purpose of solving the seed-supply issue, a seed production stand of evodia fruit has been established in Yang Xin County, Hubei province and put into production.

3hm2的吴茱萸母树林,现已投产。

More than 10 years of study on the establishment of seed production stand by thinning natural superior stands of Pinus yunnanensis in western and middle part of Yunnan and their genetic increment shows thinning natural superior stands is an important technical measure to establish seed production stand.

10余年来对滇西和滇中的云南松天然优良林分疏伐营建母树林及遗传增益的研究结果表明 :疏伐是优良林分营建母树林的重要技术措施。

Through the variance analysis,we found both age of maternal plant and the substrate type had significant effects on rooting rate of cuttage and the mean rooting rate of cuttings from the 2-year-old maternal plant was 77.

通过方差分析发现穗条母树年龄、基质种类对扦插生根率有显著影响,其中穗条母树年龄为2 a时,平均生根率达到了77。

The resources of mother tree of Metasequoia glyptostroboides within Xingdoushan reserve have been surveyed by the authors, and the resource quantity of Metasequoia glyptostroboides mother tree, distribution regularity and endangered reasons have also been explored, therefore, the accordingly protection measures have beenput forward.

笔者对星斗山保护区内的水杉母树资源进行了调查,探明了保护区内水杉母树的资源量、分布规律及濒危原因,并提出了相应的保护措施。

High-yield struction of seed forest of amur cock-tree;

黄菠椤母树林丰产型结构的研究