Apple trees have more water influencing flowering and the trees return to prosperous; water lacks, fruit is small, fruit shape is easy to flatten, and coloring is poor. At the time of watering, high yields do not affect flowering, and many fruit growers are not sure. Moreover, some apple orchards have poor site conditions, especially in mountainous areas where water shortages are serious, and most of them depend on Tianyangyuan, so grasping the supply of water is an important part of apple production. According to the author's own years of experience, put forward the following views for reference of fruit farmers.
First, the germination to the flowering temperature before this period is low, the leaf curtain is not formed, the water requirement is less. However, watering this time can relieve the disruption of cell division caused by lack of water after anthesis, delay flowering, and prevent freezing in the flowering period.
Second, the new tip long-term increase in temperature during this period, the increase in the amount of leaves, the demand for water increased dramatically. In particular, within one month after flowering, if there is a lack of water, it will lead to a variety of symptoms such as small, abnormal, and fruity apples. Therefore, if this period is particularly dry, create conditions to pour water once.
Third, the flower bud differentiation period This period fruit trees need less water, water, affect flowering. If the rain is heavy, pay attention to drainage and air drying. If it is particularly dry, only spray half of the entire tree body or spray water on the tree.
Fourth, fruit expansion period This period of high temperature, thick leaves, fruit fast, water consumption, try to pour water.
V. The temperature of the fruit before harvest is gradually lower, the water in the fruit leaves is reduced, and the air has a certain humidity, which is conducive to fruit coloring. However, excessive water will affect the coloring of the fruit. Therefore, during this period of drought, water can be sprayed on the trees sooner or later, instead of pouring water. When the rain is heavy, be sure to pay attention to drainage or air-drying.
Sixth, after fruit picking to the deciduous period before this period is the key period of storage nutrition, combined with fertilizer watering, is conducive to full flower buds, it is necessary to pour a large water.
VII. The period of dormancy This period requires the least water, but it still needs a certain amount of water supply.
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