探讨义乌大枣幼树树体结构与负载量的相关性

Preliminary Study on Interrelation of Tree Composition of Zizyphus jujuba Sapling and Load

对义乌大枣幼树的树体结构与负载量相关性进行了探讨,认为三年生枣树单产要超过3公斤,必须干粗在3厘米以上,枣头总生长量在500厘米以上,树冠体积在1.2立方米以上。四年生枣树单产要超过4.25公斤,干粗4厘米以上,枣头总生长量在800厘米以上,树冠体积在2.4立方米以上。

This paper made preliminary study on interrelation of tree composition of Zizyphus jujuba sapling and load. The author hold that if diameter Of tree trunk is above 3cm, total growth amount of jujuba head is above 500cm and volume of crown is above 1.2 m^3, per unit area yield of three annual jujuba can reach over 3kg and if diameter of tree trunk is above 4cm, total growth amount of jujuba head is above 800cm, volume of crown is above 2.4m^3, per unit area yield of four annual jujuba can reach over 4.25kg.