Key Points of Spring Management Techniques for Young Sweet Cherry Trees
The spring management techniques for young sweet cherry trees are summarized as follows: 1. Fertilization. Before bud break, apply 50 grams of urea per tree, and water thoroughly to thaw the soil. 2. Pollination. Sweet cherries are generally cross-pollinated species, with few self-pollinated species; planting not only requires pollinizer trees, but pollination measures must also be taken during the flowering period, generally manual point...
The spring management techniques for young sweet cherry trees are summarized as follows:
1. Fertilization. Before bud break, apply 50 grams of urea per tree, and water thoroughly to thaw the soil.
2. Pollination. Sweet cherries are generally cross-pollinated species, with few self-pollinated species; planting not only requires pollinizer trees, but pollination measures must also be taken during the flowering period, generally manual point pollination or introducing bees during bloom.
3. Spring supplementary pruning. The tree shape should be adapted to local conditions and shaped according to the tree; the pruning methods for apple trees can be used as a reference. The open-center tiered shape is: remove the sprouts on the lower 50 cm of the trunk, and grow 3 to 5 branches within 20 cm from the top of the trunk; when the branches reach 30 to 50 cm in length, keep 3 vigorous main branches with suitable directions, keep 1 to 2 auxiliary nurturing branches on the main branches, lightly prune the central leader at 80 to 120 cm, and cut off all remaining branches. The sizes of the three retained main branches are: the first main branch larger than the second main branch, and the second main branch larger than the third main branch; the directions of the three main branches: the first main branch cannot be retained on the south side, and can be retained in the other three directions. If only 1 to 2 branches grow within 20 cm, keep the branch with a suitable direction as the main branch, lightly prune the central leader at 50 to 60 cm above the branch, and cut off useless branches and trunks. The spindle shape is: head the trunk at 90 cm, remove all sprouts and young shoots on the sapling trunk within 50 cm near the ground, keep branches alternately at 20 cm intervals, and train them flat in fixed directions, and cut back the central leader at 1 m.
4. Pest and disease control. Before bud break, spray 3 to 5 degrees Baume lime sulfur mixture, which can effectively control various pests and diseases; during the leaf expansion period, spray imidacloprid, diflubenzuron, Taoxiaoling, and Junbizhi, which can control aphids, leaf-eating larvae, and various fungal diseases; spraying some foliar fertilizer as well will give better results.