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Fruit trees must be well managed before winter
Fruit trees need to be strengthened after the fruits are harvested and before the winter. According to the practice of many years of production, it is very important to grasp six managements before the winter. Specific management content is as follows: First, foliar fertilizer. After the fruit trees are harvested and before defoliation, 0.5-0.6% urea is sprayed once every half month, and 0.2-0.4% of potassium dihydrogen phosphate or 0.3-0.5% ammonium phosphate can also be sprayed to increase the leaf photosynthesis capacity. Second, autumn basal fertilizer. Usually after fruit picking until late October. The method is to dig an annular ditch around the root of the tree and then apply the fertilizer into the ditch and then cover the soil. Generally, 100-250 kilograms of fertilizer is applied to each fruit tree, and mixed with 1.5-2 kilograms of superphosphate and 0.5-0.79 kilograms of available nitrogen fertilizer. Third, pruning topping. After the fruit is harvested, it is pruned and pruned before winter shearing. The main content is to properly cut off some of the leggy branches in the later period or carry out toppings in order to control the growth of branches and promote lignification. Fourth, plough the garden. The autumn orchards are overgrown with weeds and have poor soil permeability. Therefore, after harvesting, the cultivators immediately weeded and weeded deeply. Within the canopy, the interior of the canopy should be turned slightly to prevent it from being damaged. The depth of the canopy deeper than the canopy is generally 40-50 cm. This enhances the permeability of the soil and is conducive to the retention of water and nutrients and the absorption of water and fertilizer by the root system. Fifth, autumn pruning: After the fruit trees are fallen, the diseased branches, dead branches, dense branches, and inaccessible branch branches will be cut off in time, which will reduce the amount of winter shear and lay the foundation for the growth of fruit trees next year. Six, remove the source of the disease. After deciduous fruit trees, their deciduous, residual fruits, weeds, and diseased branches are taken out of the orchard and burned or buried deeply to eliminate overwintering bacteria and insect sources. The fruit trees with insect pathways were found, and 50% of the dichlorvos emulsifiable concentrate could be sucked with cotton balls for 10-20 times, stuffed into the tunnel, and then plugged with mud.