This paper analyzes and summarizes some experiences and matters needing attention of local kiwi fruit tree in winter pruning, and shares them for your reference.
Winter pruning in kiwi fruit tree should be divided into female trees and male trees, because their pruning methods are different. Although the pruning time of male and female kiwi fruit tree is mainly in winter, kiwi fruit tree will also carry out some pruning operations in summer and autumn according to the situation of fruit trees.
In summer, female kiwi fruit tree should be pruned lightly, male kiwi fruit tree should be pruned heavily, female kiwi fruit tree should be pruned heavily in winter, and male kiwi fruit tree should be pruned lightly.
When the male kiwifruit tree is pruned in winter, it will not be pruned on a large scale, which is convenient for the male tree to have more branches and flowers in the next year, which can improve the success rate of natural pollination and the number of pollen collected by the male tree.
The pruning of kiwifruit mother tree is mainly to update the fruiting mother branch, and the principle of pruning and replacement is to choose the place close to the main branch as far as possible. In those years, when the mother kiwi fruit tree kept more mother branches, it is advisable to choose moderate branches to reduce the retention of too many branches and short and weak branches.
When pruning the female kiwi fruit tree, be aware of it. For trees with symmetrical branches, stagger the buds and leave branches. Generally, the amount of branches left per tree should be controlled at 8- 12 branches. In this way, the interval between mother branches should be more than 20 cm, which is convenient to ensure the better quality of kiwifruit in the later stage.
Notes on Kiwifruit Pruning Generally, the pruning time of Kiwifruit is from the end of June 165438+ 10 to the end of February 65438+February every year, and it will not start until the leaves of Kiwifruit fall, so that the leaves of Kiwifruit can complete photosynthesis as much as possible and store nutrients for fruit trees.
Kiwifruit pruning in winter has a certain time requirement, so it is not advisable to prune branches and leaves in advance. Premature pruning will cause bleeding of fruit trees, resulting in dead branches and nutrient loss.
Pruning kiwifruit in winter can determine the flowering quantity and fruit yield in the next year. In order to improve the quality and price of fruit, the appropriate number of branches should be determined according to planting density, tree potential and kiwifruit variety type. For common early-maturing kiwifruit varieties, the reserved number of mother branches does not exceed 12, and that of late-maturing kiwifruit varieties does not exceed 12.
After pruning and tying kiwifruit branches in winter, the fruit trees should be cleaned, and the fruit trees and gardens should be disinfected by spraying pesticides with poles to reduce the occurrence of various diseases and insect pests of kiwifruit in the following year.