树木移栽时树穴为何要适当增大？
近一段时间土壤还尚未结冻，是落叶树木冬季移栽的佳时期。有不少朋友问我，在进行树木移栽时这个树穴到底该如何去挖？才能更有利于树木的移栽，以及移栽后树木的成活。下面来讲讲吧。
Recently, the soil has not frozen yet, making it a good time to transplant deciduous trees in winter. Many friends have asked me how to dig this tree hole during tree transplanting? Can be more conducive to the transplanting of trees and the survival of trees after transplanting. Let's talk about it next.
一般来说我们所挖树穴的大小是由我们所栽植树木的胸径或者土球来决定的。
Generally speaking, the size of the tree hole we dig is determined by the DBH or soil ball of the tree we plant.
对于胸径在10公分以下，胸径较小的树木，要么是裸根移植，要么就是土球比较小。这一类可以直径使用50公分直径的打孔机进行打孔，然后进行移栽。这一类只需要注意树木的栽植深度即可，其他方面基本上不用操心。
For trees with a DBH of less than 10 centimeters and a smaller DBH, either bare root transplantation or small soil balls are required. This category can be drilled using a 50 cm diameter drilling machine and then transplanted. In this category, it is only necessary to pay attention to the planting depth of the trees, while other aspects are basically free of concern.
而对于胸径在10公分以上，胸径较大的树木，我们需要先挖土球，然后根据土球的大小来决定树穴的大小。一般来说树穴直径少要比土球的直径大50公分左右，深度也比土球的厚度高出20~30公分。
For trees with a DBH of more than 10 centimeters and a larger DBH, we need to dig soil balls first, and then determine the size of the tree hole based on the size of the soil balls. Generally speaking, the diameter of the tree hole should be at least 50 centimeters larger than the diameter of the soil ball, and the depth should be 20 to 30 centimeters higher than the thickness of the soil ball.
在挖取土球时，土球的直径一般为树木地径的6-8倍，而厚度则为土球直径的2/3左右。比如地径为20公分的树木，其土球直径一般为1.2米~1.6米，厚度为80公分左右，其所需要的树穴大小则直径一般为1.7米~2米，深度为1米~1.1米。
When excavating soil balls, the diameter of the soil ball is generally 6-8 times the diameter of the tree ground, and the thickness is about 2/3 of the diameter of the soil ball. For example, for trees with a diameter of 20 centimeters, the diameter of the soil ball is generally 1.2 meters to 1.6 meters, and the thickness is about 80 centimeters. The required tree hole size is generally 1.7 meters to 2 meters in diameter, and the depth is 1 meter to 1.1 meters.
对于胸径较大的苗木可以适当地扩大树穴，这是为什么？
Why is it possible to appropriately expand the tree hole for seedlings with a larger diameter at breast height?
胸径较小的苗木一般来说移栽的成活率还是比较高的，所以不需要进行什么特别的注意，而胸径较大或者与原生地距离较远的苗木，则需要适当地将树穴扩大再进行栽植。
Generally speaking, seedlings with small DBH have a relatively high survival rate after transplanting, so no special attention is required. However, seedlings with large DBH or distant from the original site need to appropriately expand the tree hole before planting.
这主要是因为，要想树长的好，成活率高，就一定要先养根。而根系想要长的好一定要满足两个条件：
This is mainly because if a tree wants to grow well and have a high survival rate, it must first cultivate roots. Two conditions must be satisfied if the root system wants to grow well:
一个是根系附近土壤的透气性要好；一个则是土壤的温度要适宜。
One is that the soil near the root system has better air permeability; One is that the temperature of the soil should be suitable.
将树木移栽时的树穴进行扩大之后，再进行移栽，可以将土壤中的一些建筑垃圾挖除，改善苗木根系环境附近土壤的透气性，土壤也变得更为疏松，这些十分有利于苗木新根的萌发，便于树木后期的成活。更多相关内容就来我们网站http://www.longyuejiancai.com咨询吧！
After expanding the tree hole during tree transplanting, transplanting can remove some construction waste from the soil, improve the air permeability of the soil near the root environment of the seedlings, and make the soil more loose. These are very conducive to the germination of new roots of the seedlings and facilitate the survival of the trees in the future. For more relevant content, please visit our website http://www.longyuejiancai.com Consult!
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