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果树的生长发育与其周围环境条件是统一的。在什么样的生态和栽培条件下,就有什么样的树体反应。如在同纬度条件下,随海拔的升高,树体渐趋矮化;在同一地区,平地的树冠大于山地树冠;生长期长、高温多湿、土层深厚的条件下,树体往往偏大,反之则小;肥水等条件好的,树冠明显大于肥水条件差的,……总之,树体大小受气候、土壤、管理水平等影响,因子比较复杂。本文仅就密植条件下的树体调节问题进行讨论。密度的问题,是
Fruit tree growth and development and its surrounding environmental conditions are unified. In what kind of ecology and cultivation conditions, what kind of tree reaction. For example, at the same latitude, the trees gradually dwarfed with the elevation; in the same area, the canopy of flat land was larger than that of the mountain canopy; the tree body tended to be larger under the condition of long growing season, high temperature and more humidity, , Otherwise small; fertilizer and other conditions are good, the crown is significantly greater than the poor water and fertilizer conditions, ... ... In short, the tree size by climate, soil, management level, the impact of more complex factors. This article only discusses the regulation of trees in close planting conditions. The problem of density is