The conditions of the apple orchards are poor, especially in the mountainous regions where the water shortage is severe. Most of them rely on the Tianyang Garden, so the lack of water has a great impact on the normal growth and development of apple trees. Based on my many years of experience, the author put forward his opinions for the reference of the fruit farmers:
1. Germination to flowering. The temperature is low, the leaf curtain is not formed, and less water is needed during this period. However, watering this time can relieve the cell division caused by the lack of water after flowering, hinder flowering and prevent frostbite during the flowering period.
2. The new tip of long-term. The temperature keeps increasing, the amount of leaves increases, and the water demand increases greatly. In particular, within one month after flowering, if there is a lack of water, it will be like what friends say, such as the symptoms of being easy to be small, fruit-shaped and easy to be flat, and odd-shaped fruit. The author suggests that during this period, days are as special droughts, creating conditions to pour water once.
3. Flower bud differentiation period. Less water is needed. When there is a lot of moisture, it affects flowering. When the rain is heavy, pay attention to drainage and air-drying. If there is special drought, only spray half of the entire tree body or spray water on the tree.
4. Fruit enlargement period. The temperature is high, the leaf thickness is thick, the fruit enlarges fast, consumes much water, try to pour water once in this period.
5. Before the fruit is harvested. As the temperature drops, the water in the fruit leaves decreases, and the air has a certain humidity, which is beneficial to the coloration of the fruit. However, excessive water will affect the coloring of the fruit. Therefore, during this period of drought, the trees should be sprayed with water in the morning and evening. Do not pour water. When the rain is heavy, be sure to pay attention to drainage or air-drying.
6. After fruit picking, before defoliation. This period is a critical period for storage of nutrients, combined with fertilization and watering, is conducive to full flower buds, is very important. Try to pour a big water.
7. Dormancy period. This period requires the least amount of water, but it still needs a certain amount of water supply.
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