果树的根系和地上部是一个有机体的两个组成部分。为了解枣树根系的生长活动规律、结构状态为生产管理提供依据,1973～1975年我队大枣科研组观察了5～7年生酸枣嫁接大枣的根系活动情况、根的结构和分布情况,同时还作了树干培土诱发不定根的试验。下面把观察到的情况,作一粗浅整 The roots and shoots of fruit trees are two components of an organism. In order to understand the law of growth activity of jujube root system, the structure state provided the basis for production management. From 1973 to 1975, jujube research group of our team observed the root system activity, root structure and distribution of grafted jujube from 5 to 7 years old, At the same time, we also made adventitious roots test by inducing stems into soil. The following observation of the situation, make a superficial whole