Three first and then cut in turn, three thin and three dense yields are high.
The pruning order of red Fuji apple trees is: pruning the big branches first, then pruning the small branches; Trim the lower branches first, and then trim the upper branches; Prune the branches in the crown first, and then prune the branches outside the crown. In order to make the fruit trees better ventilated and obtain high yield, the pruning of red Fuji apple trees should follow the principle of "three sparse and three dense", that is, the big branches are thin, the small branches are dense, the upper branches are thin and the lower branches are dense; The branches outside the crown are thin and the branches inside the crown are dense. This apple tree is cut down three times first, and then cut down in turn.
(2) light cut long and slow, not cut flowers and fruits. Within one or two years after planting, except for cutting off the trunk or other branches with space, other branches should not be cut off slowly, and then restored after bearing fruit. Branches that are too dense and lush should be cut off properly.
(3) Combination of inserting, pruning and flower cutting. In order to prevent the slow release of Fuji branches year after year, there are more branches and less nutrients at the branches, and flower buds are not easy to form, so the generated parts are removed. Some branches can be retracted (blocked) to stimulate the lower part to produce short branches. The branches on the left slowly loosen to form buds. At the same time, for Fuji branches with flower buds, they can be cut off on the flower buds during pruning to avoid germination caused by truncation. (4) Go to both sides on Wednesday and leave branches in the middle. Small and medium branches around the crown of Fuji apple trees are often crowded and compete with each other on tripods. Generally speaking, the branches on both sides of the tree should be thinned, leaving a branch in the middle.
(5) long branch bending shear. The branches of red Fuji apples grow strongly. When pruning, you can bend and lengthen at all levels, that is, reduce the elongated branch angle in the first year, increase the elongated branch angle in the second year and reduce the elongated branch angle in the third year. In the fourth year, the extension branch angle is increased, and so on. This apple tree is cut down three times first, and then cut down in turn.
(6) "four two long" scissors. In order to prevent the growth of red Fuji apple trees from being too large and affecting the results, Red Fuji often adopts the pruning method of "four long and two long", leaving four more around, a few more on both sides, and many auxiliary branches and long branches.
(7) Continuous shearing under roof control. Red Fuji is easy to form strong and weak growth. When pruning continuously every year, we should control the advantages of the top branches, pull out the upright and lush branches at the top branches in time, promote the germination of the lower branches, and fall off in time at the fruiting stage. There are fewer branches in the upper part of the crown and more branches in the lower part. This apple tree is cut down three times first, and then cut down in turn.
(8) Cut slowly. In the cultivation of red Fuji apple branches, the pruning method after slow release is generally adopted, that is, the average branches of annual yellow flowers are slowly released first, and then pruned, then cultivated into fruiting branches, and then combined with expansion and contraction.
(9) "Three sets of branches" cutting. The pruning method of "three branches" is often used to prune the branches of Red Fuji, that is, one branch with three branches, one branch in the current year (output), one branch with slow release (output in the second year) and one branch with short cut (output in the third year), so as to ensure the fruit and development of the tree. This apple tree is cut down three times first, and then cut down in turn.
(10) The fruit should be stubbled at the late stage of fruit setting. In the late stage of red Fuji fruit, we should raise the branch angle, pay attention to renewal and adapt to the growing cuttings.