氮、磷是树木必需的矿质营养，在自然界中它们影响着树木个体的生长、群落的发育及整个生态系统的生产力。
Nitrogen and phosphorus are the necessary mineral nutrition to trees. They determine the growth of individual, the development of community and the productivity of ecosystem in the nature.
关于树木个体发育中成熟和幼化，包括幼年性、成年性及其关系与利用的问题，越来越多地引起了人们的关注，成为今天无性系育种中的重要课题。
The tree's individual developing about maturation and rejuvenation including yang growth and majority of them, are attracting the people even more , so it has been an important task.
阅读和研究树木的行为——这个话题他在林业学校中学习得甚少——他发现，在自然界，树木更多时候不是以个体形式生活，而是像社群一样。
Reading up on the behavior of trees - a topic he learned little about in forestry school - he found that, in nature, trees operate less like individuals and more as communal beings.
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