Pre flowering water is mainly poured during germination and flowering to meet the water requirements of Nanking cherry tree for germination, leaf development, flowering, fruit setting and young fruit growth, which can be carried out together with fertilization. During this period, the temperature is lower, and the amount of irrigation water is less. Proper watering can not only prolong the flowering period, but also avoid the damage of late frost to Nanking cherry trees. Note that it is better to put the water for a period of time, wait for it to warm before pouring.
The so-called sclerotic period refers to the first and middle of May, which is the most vigorous period of fruit growth and development. At this time, the fruit development is still very slow, and there will be no cracking after irrigation. During this period, water should be frequent and the water volume should be large. Generally, water should be irrigated 1-2 times. Generally, the soil moisture is too high and the surface temperature is reduced when the water is just applied. Therefore, it is necessary to loosen the soil in time to promote the rise of ground temperature, improve the permeability of soil and maintain soil moisture. The fruit should not be watered as much as possible.
Cherry trees consume a lot of nutrition when they bloom and bear fruit, so they should be fertilized and watered in time. The amount of watering should be less, not more. It's better to water over the ground, which is good for Nanking cherry tree recovery and flower bud formation.
During the period from defoliation in autumn to pre freezing, the frozen water should be poured in combination with deep turning of soil and fertilization, which is conducive to promoting water absorption of trees and safe overwintering. If conditions permit, sprinkler irrigation and drip irrigation can also be used, which can not only reduce the loss of soil nutrients, increase air humidity, but also regulate the microclimate of the orchard, so that plants can grow better.
