Summer high temperature and high humidity, apple tree shoots have begun to enter the second long-term, fruit development into the expansion period, do a good job of regulating the tree potential, reduce disease, insect pests, and promote good growth of young fruit is the management focus of this period.
Scientific management of fertilizer
Rational fertilization: According to the varieties, the amount of fruit and the previous fertilization conditions to determine the apple tree top dressing conditions. Can be followed by a phosphorus, potassium fertilizer, with emphasis on potash fertilizer, depending on the amount of fertilizer. May be combined with rainfall in August for fertilization. In summer, it can be combined with the use of drugs, foliar can be sprayed with phosphorus, potassium, calcium, iron and other fertilizers, to increase fruit sugar content, promote coloration, reduce the fruit's physiological disease has an important role. Commonly used fertilizers are superphosphate, potassium dihydrogen phosphate, ash and ferrous sulfate.
Drainage and weeding in orchards: If it is rainy in summer, the accumulation of water in the orchards will affect the orchard soil permeability and the growth of apple tree roots. Therefore, timely drainage after rainfall, timely planning after watering or rainfall, and clearing the garden Grass, to ensure the permeability of the soil in the garden.
Timely control of tree potential
In summer, it is suitable for vegetative growth of apple trees, especially in early-fruiting young trees and mature trees with few fruiting trees. The summer and autumn shoots thrive and thrive. If they are not regulated, they will affect the flower bud differentiation, resulting in the loss of nutrients, tree-like disorder, and reduced fruit quality. Therefore, according to the age, tree vigor, results, etc., take appropriate measures to regulate and maintain strong tree growth. One can spray 150-200 times of paclobutrazol for Wangwangshu. At the same time, it is necessary to do a good job in summer pruning. The focus is to eliminate standing erect branches on the back, long branches inside the branches, branches that compete on the branches, and useless branches that affect the light, in order to achieve strong control, improve lighting conditions, and promote fruit development. The purpose of flower bud formation.
Pay attention to pest control
In summer, the apple trees are vulnerable to sunburn, and management must be timely watered. The straw or wheat stubble can be covered on the tree tray before the high-temperature drought. The positive side of the fruit cover the tung tree leaves, broadleaf grass, etc., or when the sun goes down or obliquely Spray water on the crown to reduce direct sunlight and reduce sunburn. A layer of lime milk can also be applied on the positive side of the fruit to provide a reflective, anti-day-burning, and antiseptic effect. August is the critical period for the apple tree to prevent boll disease, anthrax, and early defoliation. In the use of drugs, the bactericide and protective agent should be used interchangeably. Generally in the early August and late August each spray 1 drug, effective drugs are Bordeaux fluid, carbendazim WP. Pest control should be based on red spiders, leaf miners, leaf roller moths, apple aphids, etc., according to the local temperature, rainfall and occurrence of timely medication.
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Hongxing Factory
Dongying Hongxing is located at Dongying City, Shandong Province China since 1995.
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