There is currently no good way to prevent natural disasters such as thunderstorms and hail. Although it cannot prevent the occurrence of thunderstorms and hail, we can actively learn the management measures for orchards after thunderstorms and hail, so that our own fruit trees can recover from the disaster as soon as possible and reduce losses.
Clean up orchards and reduce pathogens. One is to promptly clean up the hail, stumps, leaves and fruits deposited in the orchard. For orchards with silt and accumulated water after the hail disaster, the accumulated water should be discharged in time to remove the silt and expose the trunk of the fruit tree; the second is to completely remove the fallen leaves and fruits on the ground for the severely damaged orchards with broken skin and broken branches and broken leaves. Bury and remove the fruit that has no commercial value, and retain some of the fruits of the small hail pit to reduce the loss of the year.
Spray medicine in time to prevent disease. Spray bactericides such as thiophanate-methyl, bactericidal clear, bactericidal king, bacterium-clearing, carbendazim, etc. every 10-15 days, spray 2-3 times in a row to prevent the invasion of bacteria. Loose soil, rooting and strengthening trees After thunderstorms and hail weather, the soil should be turned over 2 to 3 times in a row to distribute excessive moisture in the soil, improve soil permeability, restore the physiological activities of the root system, and thus achieve rooting and strengthening trees purpose.
Topdressing and restoring to restore vitality. The first is to spray fertilizer on the leaves to solve the problem of insufficient nutrients in the tree; the second is to apply the balanced nitrogen, phosphorus and potassium water-soluble fertilizer underground. After the fruit trees regain their vitality, the main fertilizer is farm manure, and the appropriate quantitative fertilizer is applied. When drought, irrigation is combined with fertilization.
Apply medicine to protect the wound. After the cortex of the fruit tree trunk, main branches and some larger side branches are damaged by hail, the rotten rotten skin should be cut off in time, and agents such as decay spirits should be applied to promote wound healing. For wounds with an area of ​​more than 1 square centimeter, plastic bags should be applied at the same time as applying the medicament to accelerate the healing of the wound.
Trim the branches and keep the branches reasonably. After the hail disaster, the broken branches should be cut off in time. For the branches with high density of hail damage, heavy skin breakage, and irrecoverable branches, they should be cut off from the base or intact, and more development branches or branch groups with light hail damage should be left to avoid causing large wounds. After trimming, the cut should be coated with grease to prevent dry rot. Because there are many tree wounds, the leaf buds under the wound will germinate quickly. Newly germinated branches should be properly reserved according to the shape of the tree to make up for the vacancy of the broken branches. All other shoots that disrupt the tree shape and the shoots at the base of the tree are completely removed .
Manage flowers and fruits and improve quality. After the disaster, promptly remove the severe secondary damage to the hail injury to save nutrients and restore the tree as soon as possible. Other late ripening fruit trees make up bags. Because the top leaves of the fruit tree are interrupted and broken, part of the fruit bag is broken, the fruit is directly exposed to the sun, and sunburn is prone to occur, and the bag should be supplemented to improve the quality of the fruit and reduce the loss.
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