Specific management measures for the rain aftermath

Fruit tree leaf yellowing

Excessive rainfall can easily cause the supply of major nutrients to be full or even excessive, which also leads to the shortage of some elements, which leads to the yellow leaf phenomenon of fruit trees. Therefore, after the rain, we should do a good job of topdressing in time, combining underground topdressing and foliar fertilization to supplement the nutrient elements lacking in fruit trees. Pay attention to the symptoms of deficiency before administration and supplement the corresponding elements. At the same time, it is necessary to control the growing fruit trees.

Appropriate fertilization, fertilizer application, help restore the tree. Spray with 0.3% potassium dihydrogen phosphate solution every 10 days or so, and spray 2 to 3 times, foliar spray can be carried out simultaneously with spraying. The heavier orchard in the affected area should adopt multi-point acupoints to apply phosphorus and potassium fertilizer, special fertilizer for fruit trees, diammonium phosphate, etc., about 40 kg per mu.

Cause rotten root

The main reason for the rotten roots is that after the rainstorm, the orchard is low or the drainage work is not in place. Due to excessive water accumulation, the roots are deprived of oxygen, which causes the roots to affect the supply of nutrients, resulting in rapid wilting of the leaves and subsequent rotting. In this case, remove the accumulated water. After the storm, some orchards are low-lying due to low terrain and water accumulation after the rain, which will cause anaerobic respiration of the roots of the fruit trees, causing some roots to root, affecting the supply of nutrients, causing the leaves to rapidly wilting in the short term and rotten roots. It can drain the open ditch, shallowly turn over the acre and apply the lime and spray the love to collect the sterilization.

Flower bud differentiation is blocked

The growth of fruit trees caused by heavy rain will affect the transformation of vegetative growth of fruit trees to reproductive growth, so that the nutrient distribution of fruit trees is less effective in flower bud differentiation, resulting in blocked flower bud differentiation and poor differentiation, which in turn affects the yield of the coming year. Therefore, summer shearing work is particularly important. It is necessary to timely remove too many branches on the back, or take the branches to adjust the tree potential, so as to balance and coordinate the supply of nutrition. A benign process of spraying potassium dihydrogen phosphate with growth inhibitors to promote flower bud differentiation can also be employed.

Clearing

The storm will cause the orchard to be messy and the phenomenon of decline. The garden should be cleared in time to strengthen the pruning after the disaster. The fruit orchards in the orchard should be completely removed from the fruit orchards in the orchard and pulled into the orchard for deep burial. Cut off the broken branches, clean out the garden and concentrate on incineration, thereby reducing the infection of bacteria and promoting ventilation and light transmission. If the fruit bag is damaged and the fruit is not damaged, remove the damaged bag, spray the fungicide once, and then re-pack the bag to support the soil.

For the fruit trees that are inclined or volatility after the disaster, it is necessary to carry out the soil in time, and then step on the soil after the soil to avoid root damage again.

Whether the orchard management is in place directly affects the growth of the tree, fruit yield and quality. Therefore, the management of the orchard after the rain cannot be ignored, and the management work needs to be in place.

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