During the growth of greenhouse cucumbers, due to improper cultivation and management, or climatic factors, a large number of melons often appear, which seriously affects the yield. To clarify the causes of the development of melons and adopt appropriate technical measures, we can effectively avoid or reduce the occurrence of melons, thus greatly increasing production. Six types of melons and their prevention and control methods are summarized for your reference. First, the weak melons and melons are too weak, and the accumulation of nutrients is small. At the same time, with 2-4 melons, we must turn melons off. Preventive measures: Appropriate amount of rushing Jingong bio-water flushing, 1 kg of magnesium sulphate, expanding the leaf area and increasing growth; raising the night temperature to around 20°C for 2-3 days, 25°C during the day, and accelerating the growth of leaf area; Some melons, concentrated nutrition first expand 1-2 melons; 15 kg of water, Jiafeng produce 1 and green wave foliar fertilizer half bags, spray the whole plant, strong and promote melon. Second, the temperature difference between day and night Squash melons melon period Long time is higher than 20 °C, temperature difference between day and night is less than 10 °C, light and products will be consumed a lot of melon. Preventive measures: Master daytime 25°C-32°C, nighttime 13°C-18°C; For the prosperous greenhouses, spray the Kompet 8 on the foliar surface to control the growth of the melons; sparse melon shoots, spraying with lectin and The high potassium nutrient mixture promotes enlargement of the melon and melon. Third, the plant leaves over-prosperous melon cucumber plants long side of the long melon, if the long stems and leaves Wang Wang, nutritional growth too prosperous, will inevitably inhibit reproductive growth and melon. Preventive measures: After planting seedlings, control water, control temperature, control nitrogenous fertilizers, promote seedling roots, inhibit vegetative growth, and promote sitting cucumbers. Irrigation with 95% green chlorpromazine combined with root fertilizer, hair root strong and strong; found that there is a prosperous trend, with CommScope No. 8 liquid fertilizer 100 ml/mu spray tip, regulate nutrients for fruits, control Wangchangzhuan strong, Reduce melons. Fourth, the temperature is too low, melon day temperature is lower than 20 °C, cucumber leaves can not be normal photosynthesis, malnutrition for three consecutive days, there will be empty melon. Preventive measures: increase the covering at night, exposing the grass cover early in the daytime to improve the temperature of the greenhouse; during the short time of day at 20°C-24°C, spraying with 10mg of probiotics and high-potassium nutrient 50g + sugar 100 grams, 14 kilograms of water; every 15-20 days in low temperature season, apply a rooting agent to increase the anti-freezing and anti-weak light ability of the plant. Use 1 kilogram of root-strengthening agent and 5% naphthaleneacetic acid 400-500 ml. With Beijing Agricultural Fertilizer. 5. The ratio of nitrogen, phosphorus and potassium needed for the growth of potassium-deficient cucumbers is about 5:2:6, and 78% of the potassium is absorbed by fruits. If potassium is insufficient, it will turn into melons. Preventive measures: base fertilizer in the case of applying organic fertilizer, apply high-quality potassium carbonate 25-50 kg per acre; into the guaranty period of regular spraying of 99% high-purity potassium dihydrogen phosphate, strong and promote melon enlargement effect; Control nitrogen and phosphorus fertilizers to prevent potassium absorption. 6. The diseased cucumber melons often fall on downy mildew, gray mold and black spots, and the photosynthetic capacity of the affected plants is easy to be changed. Preventive measures: In the early period, weak and dwarf growth was unfavorable, and the formula liquid was used to irrigate the roots 1-2 times. The formula of the liquid was (every 15 kilograms of water against the drug): 30 ml of seedling rooting agent + active root-protecting fruit 25 grams + 40 grams of power vanguard + 99% high purity potassium dihydrogen phosphate 50 grams, high foliar spray production foliar + foliar; promote the use of copper preparations against fungi, bacterial diseases, with zinc, silicon, molybdenum preparations to prevent virus disease . Stenosis Ureteral Stent,Ureteral Stent,Urethral Catheter,double j catheter Anesthesia Medical Co., Ltd. , https://www.jssinoanesthesias.com
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