The growth and fruiting habits of Xuerui and Bo Shi varieties are different. In the process of tree cultivation and pruning, the methods of technical operation are different. According to the actual observation in life practice, we must pay attention to the following aspects:
1. Xue Rui varieties in dwarf dense planting garden are grafted on dwarf rootstock M26. After planting green seedlings without branches on the main stems of fruit trees, a small amount of fruits can be produced in the next year. Although there is a certain yield in the third year, it is harmful to the normal growth of trees. Because the crown diameter of the tree is small and the number of branches and leaves is small, the fruit is likely to burn at high temperature for a long time, reducing the fruit yield of fruit products.
If the load on trees is unscientific, trees will be very prone to aging, which will endanger the production of fruit trees in rich years. From planting to the end of growth, we should pay attention to the cultivation of tree racks and bear some fruits on the trees, mainly to improve the total number of efficient main stems on the trees.
Second, the management method of the growing season of Xue Rui varieties In the production and manufacture of apples, the pruning period of fruit trees is in the growing season. Paying attention to changing the orientation of branches born on the trunk of China by pulling branches is the key technical measure to cultivate trees. For example, the branches and leaves planted on the main stems of Bo Shi varieties have strong growth potential and are difficult to blossom. The angle of view is larger, generally defined as 100 ~ 120 degrees. The key of Bo Shi varieties is to relax the details. For Xue Rui apple varieties, the growth potential of small main branches planted on the main stem is relatively slow. When the branches are pulled at 90 degrees, the germination rate on the branches is high, and it is very easy to produce short and medium branches, which is very easy to bloom.
The angle of view of pulling branches is too large, and the total number of flowers is too large, which leads to a very large amount of tasks of manpower thinning flowers and fruits. In order to reduce the cost of employing people better, it is suitable for the branches with thick branches when the angle of view is 100 degrees in the fruit tree growing season, so the actual effect is remarkable. In actual production, Xue Rui varieties do not need girdling and girdling technology to solve strong branches and promote their flowering.
Third, pruning aims at keeping trees moderately vigorous, and pruning methods are flexible. When pruning fruit trees, for short-rootstock close-planted apple orchards, especially for late-maturing pale yellow Xue Rui varieties, we should follow several common pruning techniques that we usually master: short cutting, long putting (throwing), dewatering, retraction and so on. Because of different apple varieties, pruning methods are different. For example, Bo Shi varieties are pruned by long release and thinning, and short cutting and retraction are rarely used.
Xue Rui varieties are characterized by insensitivity to pruning. In practice, the pruning method of long-term thinning is adopted, and the pruning method of short cutting is also adopted. By using these pruning methods, we can ensure that the trees are in a moderate and robust state and ensure the normal growth and development of fruit trees.