Apple trees often have rot. Because the roots were buried in the soil, early infections and illnesses were light, they were not discovered or diagnosed and were not diagnosed correctly. They were not able to treat the disease as they were, but the trees were thin, the yield and character were reduced, and the plants died. Destroyed once. The roots of apple rot are all excessively rainy in the growing season, excessive water in the soil, poor drainage, soil compaction, low organic matter content, and acid or slightly acidic soils are the most serious orchards. They are too deep or too thick to be cultivated, and are damaged when cultivated. Earthworms and other underground pests bite the root system and are prone to develop and aggravate the disease. The control method is: First, strengthen the cultivation and management and find the adverse conditions (1) Do a good job of drainage Before the advent of the rainy season, dig out the drainage ditch, remove water and excessive moisture in a timely manner, reduce the groundwater level and soil moisture content, and avoid flooding. (2) Turning the garden fertilizing From September to October after fruit harvesting, deeply turning over the orchard, reapplying basic fertilizer, and using multiple fertilizers with various elements, including many farmyard manures and green manures, the poorly-packed soil is quickly modified into fluffy and fertile soil. Improve water, fertilizer and gas heat in the rhizosphere. Invented good growth conditions for the root system. (3) Increase the acidity of the limestone orchard, in the growing season, join the cultivator weeding, increase the appropriate amount of lime, the pH value is adjusted to 6.5 or more, in order to improve the physical and chemical properties of the soil, the invention is not conducive to the aforementioned environment. (4) Trees that are reasonably loaded with excessive amounts of flowers and flowers should be well-polished and sparsely cultivated, and carefully cultivated to protect the roots and root necks from damage, so as to reduce the number of pathogens entering the road and strengthen disease resistance. No hedgehogs are planted around the orchard, and the planted species should be removed. Second, solve diseased plants in time to avoid the spread of diseases (1) When the ditching refuses to see the first diseased plant or the diseased plant, immediately the deep ditch is rejected by the drip line around the diseased plant, and the 5 bumeido lime sulfur agent is poured so that the diseased root can avoid contact with the roots of the neighboring fruit trees to prevent the disease from spreading. . (2) Clearing the roots with a tree tray to inspect the soil. If the disease is severe, the roots will be completely smashed, the skin and the wood will be scraped, and the skin will be destroyed. After scraping the diseased area and around the soil, pour 5 Baume degree lime sulfur mixture, dry and then brush 2-4 times in the disease Department of rot will be clear, disinfection and treatment; such as the rainy season, should take the opportunity to air 15-20 days , and then cover it with disease-free soil. (3) By replacing large roots and eroding roots, after making clear roots, three roots of the roots of the plant are planted along the stems to develop strong root stocks. After survival, the roots of the new rootstocks are connected to the stems. To replace the function of the old rootstock to rescue dying plants and promote restoration of tree vigor. (4) The trees with large amounts of roots and rotten trees in time, during the period of illness, have seriously affected the absorption, transportation, and exchange of nutrients between the nutrients, resulting in insufficient nutrient of the tree. Therefore, once the above solution is completed, it should be sprayed once for 300 times. Fertilizer solution, and when the new roots grow, topdressing one-time decomposed human animal manure and urine water and appropriate amount of superphosphate to make up for nutrients and promote new root growth. These diseases also damage fruit trees such as pears, peaches, plums, cherries, and chestnuts. The onset, symptoms, and regularity of the disease are similar to those of apples and can be prevented and treated with the same method. An orchard with a large number of underground pests, such as earthworms, should be killed in the mud during the occurrence period. Pet Massager,Cat Massage,Dog Massage,Pet Groomer Tools Shenzhen Jie Zhong Lian Investment Co., Ltd. , https://www.szmeizons.com