Usually, after the fruit trees enter the result period, rot disease begins to occur. With the increase of tree age and continuous increase of yield, rot disease will increase year by year. Under normal management conditions, tree load is a key factor in the pathogenesis. Year after year results consume a lot of nutrients. If nutrient supply is insufficient, it will inevitably lead to rot disease. According to actual investigation, the lesions spread slowly when the water content of the shoots is 80% to 100%, and the lesions expand rapidly when the water content of the shoots is 67%. Excessive pruning in winter, excessive wounds, and lack of timely disinfection, etc., can easily lead to disease. Freezing damage, hail, etc. will increase the rot of fruit trees. The following summarizes the comprehensive approach to prevent apple rot disease.

First, paint pepper juice will be sick with a knife scraping deep deep xylem, and beyond the disease 2 to 3 cm. Use a fresh pepper (paste with smashed handle and pepper as hot as possible) to smear the affected area and attach a uniform layer of pepper juice to the surface. 7 to 8 days and then painted again, even coated 3 times. The cure rate is 96%.

Second, pay attention to skin scraping on the disease of apple orchard, heavy skin scraping is the main stem of the main stem of the central dry base to scrape the skin, the outer bark of the bark to scrape 0.5 to 1 mm, generally scrape the rough skin, the old skin, but not Touching the formation layer, the scraped bark is a mosaic of yellow and yellow pieces.

Third, the use of turfgrass ash will root rot symptoms of the apple under the canopy of the soil to scrape off the rot, after drying for a period of time each plant applied 2 to 5 kilograms of ash and add a little fine soil to cover, issued two months later Roots, tree vigor restored year after year.

Fourth, the alkaline water impregnated with food alkaline surface and water ratio of 1:5 into alkaline solution. Scrape the sickness, apply alkaline water to the sickle with a small brush, and around the sickness about 5 cm, so that the alkaline solution can be fully impregnated into the bark. Then, it is tightly packed with a plastic film. After 10 days, it will be carried out once. After six months, the plastic film will be released. The cure rate of this method is above 85%.

5. Garnish fresh garlic and garlic. Garlic crushed with vinegar and mixed with 1:1 ratio. Place 2 to 3 days after mixing and apply to scrape. Use a knife to scrape the disease to a depth of xylem, and 2 to 3 cm above the disease. Use a piece of fresh ginger to wipe the affected area directly and apply it once every 7 to 10 days.

Sixth, impregnated salt water 1 kg salt, water 40 kg, dubbed 1:40 light salt water, and boiled cool. Scrape the disease, and use a brush or a brush to apply salt water to the disease, so as to impregnate the bark, and play a role in sterilization and disinfection. After about 2 weeks, apply again. The cure rate of this method is above 80%.

Seventh, spray control In addition to late autumn and early winter, when the leaves begin to fall off, 300-500 times Schnering liquid or 200-fold bacteria clearing liquid is used for all-tree leaching spray, especially for the main trunk to be sprayed , This can remove 60% to 70% of rot.

VIII. Coating Jinggangmycin We used the Jinggangmycin and other fields to treat the apple tree rot disease test. After scraping the lesion, we applied 1:1 Jinggangmycin solution once, and the control effect reached 100%. Jinggangmycin allows the lesion to heal faster. The lime sulfur synergistic effect and lesion healing are poor.

Nine, Shinon 120 anti-agricultural 120 on the apple tree rot disease inhibition and killing effect. The growth of mycelium was inhibited when the concentration was low at 125-250 μg/ml; the mycelium was killed when the concentration was increased to 1000-2000 μg/ml; the virulence was lost when the bacteria were immersed for 12 hours. The bactericidal mechanism is that the protoplasm of the pathogenic bacteria is agglomerated, the cell function of the bacterial cell is destroyed, the small molecule material is extravasated, a large number of vacuoles are formed, and the weight of the bacterial cell is drastically reduced. After many years of community trials and large-scale demonstration applications, the optimal concentration of 250-1000 μg/ml has been proved. After one year, the cure rate of the lesion is 100%. The best method of application is to scrape the lesion first and then apply it. After curettage, the cure rate was 90%. At the same time, it also promoted wound healing.

Ten, mud prevention and control to take fresh soil with fresh water and mix well, the degree of wetting into the mud group can stick to the bark. Smear on the diseased fruit pods, thickness 3 to 5 cm, around the sickness 5 cm, and then tightly wrapped with a plastic film, with moisture evaporation and mud off. After 1 year, the plastic film and mud were removed. In this way, aerobic bacteria can suffocate due to chronic hypoxia. The cure rate of this method is above 90%.

Eleventh, the copper sulfate mud is made into the 50% copper sulfate solution to add the appropriate amount of dry fine soil, mixes into the cheek paste, smears in the disease department, smears the scope to be slightly larger than the diseased part.

Twelve, urine urine first scrape the sickness, and then draw the human urine leaching to the wound of the sickness, around the sickness about 5 cm. Apply again 1 week later. The effect of fresh urine is generally worse than that of urine. The cure rate of urine is between 90% and 99%.

Thirteen, smearing yellow mud on the lesion coated with 4 to 6 cm thick yellow mud, to be more than 3 to 5 cm lesions, mud to hard spots, repeated pressing by hand, so that lesions and yellow mud tightly stuck together , and then wrapped with plastic cloth to prevent evaporation of water. The method is simple, low cost, and effective. The cure rate reaches 100%.

XIV. Strong tree disease prevention 1. Reasonable burden. According to the tree's reproductive status and fertilization level, determine the appropriate amount of results. 2. Increase fertilizer water. Pay attention to increase organic fertilizer, pay attention to increase phosphate fertilizer, potash fertilizer and trace element fertilizer, but at the same time, more than partial nitrogen fertilizer. 3. Paul leaf root promotion. Early defoliation is an important reason for weakening tree vigor. It is necessary to prevent and control diseases and insect pests that cause early defoliation of fruit trees.

Fifteen, rot must be clear rot must be cleared for plant biological pesticides, in the spring fruit trees before germination with 80% of the Corruptible Emulsion 50 times solution to the whole tree shower spray; summer spray in July 100 times, It is also possible to apply 80% cream 5 times to the affected area.

16. Protecting the Tree 1. Avoid frost damage and daily burns. The sunny side of the sun-dried fruit tree branches has a large temperature difference between day and night, and it is prone to frost damage in winter; in the summer, there is no leaf cover on the sun surface, and it is easy to dead skin due to sun exposure. Prevention and control of freezing injury more effective measures, first, the trunk painted white, reduce the temperature difference between day and night; second is the stem bark antifreeze. The commonly used whitening agent formula is 12 to 13 kg of quicklime, plus 2 kg of lime sulfur concentrate liquid (about 20 Baume degrees), 2 kg of salt, and 36 kg of clear water. Tu white can also prevent the branches from burning. 2. Protect the wound. Larger cuts should be flattened and then varnished or thiophanate ointment, S-921 antibacterial agent, etc. should be protected. Large lesions should be bridged and protected in time after they are cured.

Seventeen, painted iodine method first scrape the sickness, and then coated with medical iodine in the affected area, coated once every 10 days, effective in January, the cure rate was above 93%.

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