After the fruit trees are affected, the roots are in a state of water immersion for a long time, and they often cause rots due to poor ventilation, affecting the normal growth of fruit trees, and even the phenomenon of dead trees. Therefore, the management measures that should be adopted in time after a fruit tree has suffered a disaster are:
1. Drainage For flooded orchards, clear the channels in time after the rain, drain the water from the orchard, and remove the mud deposited on the foliage and the debris hanging on the plants, and straighten the trees that have been washed down by the flood. If necessary, use scaffolds. Support and fix and promote fruit trees to restore normal growth and development as soon as possible. After the drainage, the soil around the tree tray can be opened and scattered to promote the evaporation of water. After 3 clear weather, the soil is covered. Expose the roots of the trees and re-burie them in the soil. Expose the trunks and branches to whitewash with 1:10 lime water, and use straw or wheat straw to prevent cracking of the bark due to exposure.
Second, after cultivating and flooding, orchard soil compaction, easily lead to oxygen deficiency in fruit tree roots. Therefore, when the soil is a little dry, it should be time for cultivating. Increase the depth of the cultivator appropriately, mix the soil and crush the soil blocks.
Third, when the topdressing fruit tree is affected, the root system is damaged, and the ability to absorb fertilizer and water becomes weak. It is not appropriate to apply root fertilizer immediately. In production, foliar dressing can be performed with 0.1-0.2% potassium dihydrogen phosphate or 0.5% urea solution. After the tree potential is restored, the cooked manure urine, cake fertilizer or urea is applied to promote new roots.
Fourth, pruning in time to cut off the broken branches, remove fallen leaves, fruit drop. For trees with severe rooting, timely thinning, leaf cutting, and fruit removal to reduce transpiration and prevent tree plant death.
Fifth, pest control should be promptly sprayed once again to prevent the spread of pests and diseases.
6. Harvesting For orchards that have been inundated for a long time, early harvesting is required; harvested orchards that are lighter and unaffected should be harvested in stages; and late-maturing varieties should not be harvested as early as possible so as to avoid falling prices due to centralized listing. Pick leaf and fruit in time before picking, conditional orchard promotes reflective film and promotes fruit coloring.
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