Answer: Excessive drought in the soil will lead to the early flowering of apple, and the coming of concentration, weak flowering and low fruit setting rate. Before the flowering period, proper irrigation will give good soil moisture during the flowering period, which can significantly increase the fruit setting rate. However, when the soil moisture is in good condition before the flowering period, it is not appropriate to water the large water, otherwise it will make the new shoot long and compete for nutrients and cause the fruit set rate to decrease. Watering after flowering helps to split the cells and pile up the fruit to promote new shoot growth. Generally suitable for mid-to late April, except for special years. The specific irrigation period and irrigation volume should be flexibly controlled according to the weather conditions and tree growth conditions. In addition, the amount of irrigation should also be combined with soil management methods, covering the orchard can reduce the amount of irrigation.
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