Prevention and control techniques for bagged apples that turn yellow and lose color - Yantai Apple

Below, Yantai Apple will explain to you the prevention and control technology of bagged apples that turn yellow and lose color. I hope it will be helpful to everyone.
Reasonable fertilization, controlled nitrogen fertilizer, heavy application of organic fertilizer, and increased application of phosphorus and potassium fertilizer.
Apply an appropriate amount of borax and spray potassium dihydrogen phosphate to promote fruit coloring.
When pruning in summer, avoid using techniques such as girdling, pulling branches, topping and twisting to promote flower bud differentiation. At the same time, pull branches to improve light conditions and promote fruit coloring.
Use high-quality fruit bags and avoid using inferior bags and secondary bags.
Remove bags and harvest properly, pick leaves, turn fruits and lay reflective films
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