Post-disaster management of fruit trees
1. Remove stagnant water and silt, stop loose winds and stop storms. After the ice melts, melt the water immediately and remove the mud from the garden and tree branches and leaves. If necessary, remove the roots from the soil surrounding the rhizomes so as to prevent the water from soaking the roots for a long time and cause the roots to rot.
2. To deal with injured branches, leaves, and fruits. For sagging, damaged or damaged broken branches, short cuts at the palpebral fissure or at appropriate branches to prevent the wounds from becoming larger and smaller. Broken branches rub against nearby branches, leaves, fruits and shading. Break splits on the branches, cut before the appropriate branches, try to make the cut-off mouth smaller, cut smooth, so that the shear does not heal. For lighter cleaved shoots, they can be wrapped in plastic film and then tied with ropes to make them strong.
After being injured by ice, the bark curled up and the area of ​​the bark curled up was small. Bark curling area, combined with winter shear to remove the skin. For damaged branches that cannot recover, remove them immediately.
As soon as possible, the defoliants and fruits of wind blows and hail are removed, and the wounded fruit with no reserve value is removed from the tree, and the diseased leaves and diseased leaves are collected and disposed outside the orchard.
3. Protect the leaves of the fruit trees through the photosynthesis of the leaves and synthesize the organic nutrients needed for the trees. At the end of August, if there was a locust plague, at this time, the flower buds of fruit trees differentiated, and some of them had been differentiated internally or externally. The flower bud differentiation was not completed. The leaves were damaged due to pods and flower buds continued to differentiate. If the remaining leaves are further damaged by pests and diseases, it will also affect the growth of trees. Therefore, it is very important to strengthen the protection of the leaves after the disaster. It is necessary to spray 2 to 3 times of insecticidal bactericides to strengthen the prevention of insect pests from damaging the leaves.
4. Supplemental nutrition After the disaster, you need to give the tree nutrients, promote the vegetative growth of the tree, and restore the tree potential as soon as possible. Supplement fertilizer should be dominated by nitrogen and phosphate fertilizers. You can spray 0.3% ~ 0.5% urea + 0.3% ~ 0.4% of potassium dihydrogen phosphate, spray 2 ~ 3 times, or coat the trunk 3 ~ 5 times the amino acid + 5% urea. Basal fertilizer should be applied early in the fall, and more organic fertilizer should be applied.
5. Pruning removes many wounds and severely broken shoots that are difficult to recover. The upright branches on the back of the canopy, the thin and weak branches, and the upright branches on the back of the backbone branches should be removed. To reduce the consumption of nutrients. Trimming should not be heavy.
6. Prevention of pests and diseases After a storm hail, the orchard has high humidity and is more conducive to the propagation of pathogens. The tree has many wounds and the wound is easily invaded by bacteria. After sunny days, a broad-spectrum fungicide should be sprayed or combined with foliar spray to add insecticides. It can be cleared with 5% ampoules 500 times, or 70% thiophanate-methyl 800 times and 300 times times phosphoric acid. Dihydrogen potassium and 200 times urea mixed spray to prevent pests. In addition, we must clear the injured branches, fallen leaves, and fruit drop to reduce the occurrence of pests.
7. To prevent the secondary flowering of fruit trees can cause secondary flowering of fruit trees, affect the flowering results in the second year, and reduce the yield. After the tree is attacked by hail, it may stimulate the secondary flowering of the tree and the fast speed of the fall, in order to prevent the secondary flowering of the tree and the fast speed of the fall. In order to increase the cold resistance of the tree, growth hormones such as paclobutrazol, chlormequat and the like can be spray-inhibited.
2. To deal with injured branches, leaves, and fruits. For sagging, damaged or damaged broken branches, short cuts at the palpebral fissure or at appropriate branches to prevent the wounds from becoming larger and smaller. Broken branches rub against nearby branches, leaves, fruits and shading. Break splits on the branches, cut before the appropriate branches, try to make the cut-off mouth smaller, cut smooth, so that the shear does not heal. For lighter cleaved shoots, they can be wrapped in plastic film and then tied with ropes to make them strong.
After being injured by ice, the bark curled up and the area of ​​the bark curled up was small. Bark curling area, combined with winter shear to remove the skin. For damaged branches that cannot recover, remove them immediately.
As soon as possible, the defoliants and fruits of wind blows and hail are removed, and the wounded fruit with no reserve value is removed from the tree, and the diseased leaves and diseased leaves are collected and disposed outside the orchard.
3. Protect the leaves of the fruit trees through the photosynthesis of the leaves and synthesize the organic nutrients needed for the trees. At the end of August, if there was a locust plague, at this time, the flower buds of fruit trees differentiated, and some of them had been differentiated internally or externally. The flower bud differentiation was not completed. The leaves were damaged due to pods and flower buds continued to differentiate. If the remaining leaves are further damaged by pests and diseases, it will also affect the growth of trees. Therefore, it is very important to strengthen the protection of the leaves after the disaster. It is necessary to spray 2 to 3 times of insecticidal bactericides to strengthen the prevention of insect pests from damaging the leaves.
4. Supplemental nutrition After the disaster, you need to give the tree nutrients, promote the vegetative growth of the tree, and restore the tree potential as soon as possible. Supplement fertilizer should be dominated by nitrogen and phosphate fertilizers. You can spray 0.3% ~ 0.5% urea + 0.3% ~ 0.4% of potassium dihydrogen phosphate, spray 2 ~ 3 times, or coat the trunk 3 ~ 5 times the amino acid + 5% urea. Basal fertilizer should be applied early in the fall, and more organic fertilizer should be applied.
5. Pruning removes many wounds and severely broken shoots that are difficult to recover. The upright branches on the back of the canopy, the thin and weak branches, and the upright branches on the back of the backbone branches should be removed. To reduce the consumption of nutrients. Trimming should not be heavy.
6. Prevention of pests and diseases After a storm hail, the orchard has high humidity and is more conducive to the propagation of pathogens. The tree has many wounds and the wound is easily invaded by bacteria. After sunny days, a broad-spectrum fungicide should be sprayed or combined with foliar spray to add insecticides. It can be cleared with 5% ampoules 500 times, or 70% thiophanate-methyl 800 times and 300 times times phosphoric acid. Dihydrogen potassium and 200 times urea mixed spray to prevent pests. In addition, we must clear the injured branches, fallen leaves, and fruit drop to reduce the occurrence of pests.
7. To prevent the secondary flowering of fruit trees can cause secondary flowering of fruit trees, affect the flowering results in the second year, and reduce the yield. After the tree is attacked by hail, it may stimulate the secondary flowering of the tree and the fast speed of the fall, in order to prevent the secondary flowering of the tree and the fast speed of the fall. In order to increase the cold resistance of the tree, growth hormones such as paclobutrazol, chlormequat and the like can be spray-inhibited.
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