Apple rot disease is the most Common disease in fruit tree cultivation. Once a diseased plant is found, it must be prevented and treated in time. Otherwise, it will soon spread to the whole park, not only affecting the normal growth of apple trees, but also seriously affecting the yield and quality of apples. There are many methods and drugs for preventing and treating this disease. We now introduce a simple method of using salt water to prevent apple rot disease. Prevention Principle 1 The salt water has poor viscousness, strong fluidity, easy coating, and easy penetration; the effect is good; 2 25% salt water is applied to the sickle, and the water evaporates to form a thin layer. Salt film, hyphae can not penetrate the salt film and invade the phloem; 3 spread in the salt film or through the salt film invading the bast tissue, as well as bacteria left behind in the disease, due to the higher salt osmotic pressure, water absorption capacity Stronger and less watery, thus protecting fruit trees from damage. Prevention method 1 Make salt water. Put salt in a ratio of 25% into brine, put it in a pot, and let it cool. 2 scrape the sickness and applicator. In March and April or August and September, all sick necrotic bark was scraped off with a sharp knife on the branches of the apple tree and spread around 1.5 centimeters around, so that all the diseases were scraped around. Healthy and disease-free organization. When scraping, try to cut the bark at the edge of the sickle into 45 to 60 slopes so that the sickness is in a jujube-shaped or oval shape, which is conducive to the healing of the sickness. Boil the salted water with a small brush on the scraped sickle. The area should be more than 2 cm from the sickle. Scrap a piece, apply a piece, and paint it again after two weeks. Applicator must be uniform and careful not to rush to engage. 3 prevention and control. In order to prevent the recurrence of rot, when the new disease is scraped every spring or fall, it must be applied once to the previous sickness to achieve a complete cure.
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