When is the best pruning time for pomelo trees?
Where there is frost, young trees are mainly in the first life period, supplemented by winter. Among them, winter pruning is carried out half a month from fruit picking to spring bud germination, which is generally 65438+February to 65438+ 10 in the middle and late June. However, summer pruning is usually carried out from late July to early August, 15- 20 days before the release of autumn shoots.
Of course, pomelo trees belong to different stages, and the pruning techniques and methods are also different. Let's take a concrete look at how to cut grapefruit branches.
Pruning techniques of pomelo trees
Pruning method for young grapefruit trees
After planting the seedlings of pomelo trees, cut them 30-40 cm above the joint and dry them. After it germinates, choose 3-4 new branches with vigorous growth, uniform distribution around and a certain interval in the middle as the main branches, and erase the rest.
When the top of each main branch continues to extend to about 40 cm, it should be picked in time. Choose a position on each main branch and 2-3 suitable strong branches as auxiliary main branches.
However, an appropriate distance should be kept between the main stem and the auxiliary main branches, so that the lateral branches of meristem can be fully illuminated. Always wipe off the branches that cross, overlap and disrupt the tree, and the branches and buds that are not in place.
Key points of pruning techniques for grapefruit fruit trees
Generally speaking, pomelo fruit trees only shoot in spring, with few shoots in summer and autumn, and have strong fruit-bearing ability. Therefore, the pruning of the first-bearing trees should be light rather than heavy. Generally, there are only overgrown branches, pests and diseases, dead branches, too dense and delicate branches, etc. If the location is improper, the branches should be thinned and more internal branches should be left, so the mother branches should not be cut short.
The crown of adult pomelo trees has been formed, and the pruning objects are mainly the lateral branches on the main branches and various branches on them to adjust the balance between growth and fruit.
The principle of pruning pomelo trees in the fruit-bearing period is: strong trees should be sparse, short trees should be few, dense branches, upright branches and lateral branches should be sparse, and drooping branches and weak branches should be left to facilitate flowering and fruiting.
Pruning points of grapefruit aged trees
Weak pomelo trees mostly bear fruit on strong branches, so measures should be taken to remove the weak and keep the strong, and more leafy fruit branches should be left. Generally speaking, it is advisable for spring shoots to germinate or stop growing and 5-6 months before summer shoots occur.
Old trees should be bare and updated, and the main branches and auxiliary branches should be retained when updating. All the 3-4 year old lateral branches on the crown should be cut off, and no leaves should be left on the crown to promote the occurrence of strong branches.
COVID-19 can be formed within 1-2 years after germination and shoot control, and the results can be recovered.
For some declining branches that still have the ability to bear fruit, a part of branches can be updated every year and a whole tree can be updated in 2-3 years through rotation cutting.