The expansion period of apple fruit is in the summer, the temperature is high, and the evaporation is large. Only the proper moisture can promote the expansion of the fruit. In the event of drought, insufficient soil moisture will affect the development of the fruit, resulting in smaller fruit size, lower yield and lower quality. However, if the soil moisture is too much, it will cause the autumn shoots to grow and lose nutrients. If the water stays for a long time, it will affect the root respiration, the tree will age prematurely, and the lower leaves will fall off. Therefore, in this period, we must master the water balance, control the fluctuation of soil moisture, promote the normal development of the fruit, and ensure high yield and quality.

Irrigation in drought

In case of drought during this period, timely irrigation should be provided to add water to promote fruit expansion and increase yield. The key technique for irrigation during this period is to grasp a reasonable amount of irrigation water, and control the amount of irrigation water according to the soil texture and the degree of drought. It should not be too large to avoid cracking the fruit and reducing quality.

Water Saving Irrigation

The purpose of water-saving irrigation is to strictly control the amount of irrigation water. For orchards with conditions, sprinkler irrigation, drip irrigation, and infiltration irrigation should be used to implement water-saving irrigation. Water-saving irrigation has the characteristics of water saving and high water use efficiency. After implementing water-saving irrigation, not only can the soil structure be protected, but the root system can be kept in a relatively stable state of humidity and ventilation. For orchards without conditions, small water ditch irrigation methods should be used to add water.

Prevent moisture and drought

After irrigation or rainfall, effective moisture conservation measures must be taken to ensure a stable and adequate supply of soil moisture, and prevent the soil moisture from rising and falling, fluctuating too much, affecting fruit development. Moisture preservation measures are: 1. Timely cultivating and loosening the soil, after irrigation and rainfall, timely cultivating and loosening the soil, removing weeds, and reducing water consumption and evaporation loss. 2. Carry out mulching to protect the moisture. The orchard can be moistened and covered with green manure and straw before the onset of drought, which not only reduces evaporation, but also lowers the ground temperature.

Timely drainage

In production, fruit farmers have the misunderstanding that they only pay attention to irrigation and ignore drainage. During the fruit swelling period and later, in the event of heavy rain or continuous rain, the orchard will accumulate water and the root system activities of the fruit trees will be restricted, resulting in fruit cracking and early leaf deciduousness, affecting fruit quality and yield. Therefore, it is necessary to clear the ditch in time to prevent water damage.

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