During floods, the roots of fruit trees are in a state of flooding for a long time, which may cause rotten roots due to poor ventilation, affecting the normal growth of fruit trees, and even dead trees. Therefore, in summer and autumn, especially when there is rainy and continuous weather, it is very important to timely drain and manage the orchard.
Timely drainage of the orchard with lighter flooding, the channel should be dredged in time after the rain, the water in the orchard should be drained, and the silt within 1 meter of the tree tray should be cleared out to keep the normal respiratory metabolism of the tree; It is necessary to cut off in time, remove the leaves and remove the fruit, reduce the transpiration, and remove the deciduous fruit in the orchard. For the orchard that can not clean the silt in a short time, the drainage ditch should be dug between the rows of fruit trees to reduce the water table. To maintain the maximum aeration of the orchard soil.
Dry the roots and open the soil around the tree tray to dry the roots, so that the water can evaporate as soon as possible, and then cover the soil after 3 sunny weather. The exposed trunks and branches are whitened with 1:10 lime water and wrapped with straw and wheat straw to prevent the bark from cracking due to sun exposure.
After cultivating the soil, when the soil is dry, it should be tempered in time. When cultivating, it is necessary to increase the depth appropriately, mix the soil and chop the clods. According to the specific conditions of soil and fruit tree growth, it can be cultivated 1 or 2 times. The soil is ploughed after the surface soil is dry, the depth of the cultivating in the dry land is 25-30 cm, and the depth of the water cultivating is 20-25 cm.
After the foliage is topdressed, the fruit orchard should be sprayed with 0.2% to 0.4% potassium dihydrogen phosphate in time to promote coloration and improve fruit quality; 0.5% of the fruit garden should be sprayed. Urea solution to enhance light and action and increase nutrient accumulation in the tree.
Early application of various types of orchards to grasp the favorable conditions of soil moisture, early application of organic fertilizer-based base fertilizer. After the ruthlessness of the orchard with heavy water flooding is reduced, the soil is first turned into soil and then applied to the base fertilizer.
Strengthening the prevention and control of pests and diseases First, rapid spraying and prevention. Spray a high-efficiency fungicide, such as 70% of the Jiatuo, Dasheng M-45, etc. in time to control the breeding of various germs. The second is to strengthen the management of the bagging apple orchard, especially the orchard where the apple black spot disease is heavier. The vent hole at the bottom corner of the big bag should be cut and the bag should be removed in time. After the bag is removed, spray a high-efficiency fungicide in time.
Strengthen the pre-harvest management and carry out the picking and fruit transfer in time. The conditional orchard advocates the use of reflective film to increase the degree of coloration of the fruit.
Timely harvesting of orchards with long flooding time should be harvested in advance; lighter orchards and unaffected orchards should be harvested in stages; try not to harvest early-maturing varieties as early as possible to avoid falling prices due to centralized listing.
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