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 melons and adopt appropriate technical measures, we can effectively avoid or reduce the occurrence of melons, thus greatly increasing production. The main reasons for the prevention and treatment of Pomegranate are summarized below for reference. First, melons and small melons Guam is too weak, less nutrient accumulation, while bringing melon 2-4, it is easy to melon. 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; with high yield dew and green wave foliar spray the whole plant, strong sturdy promote melon. Second, temperature difference between day and night During the guacamole period, the nighttime temperature is higher than 20°C for a long time, the temperature difference between day and night is less than 10°C, and the photosynthetic product is consumed in a large amount and it will turn into melon. Preventive measures: temperature control during the day 25 °C -32 °C, 13 °C -18 °C at night; for the growing trend of the prosperous cucumber, foliar spraying CommScope 8, control prosperous melon; melon strips sparsely sprayed probiotics A mixture of high-potassium nutrients promotes enlargement of the melons and melons. Third, the plant leaves over prosperous melon The long side of the cucumber plant is a long melon. If the long stems of the long stems and long stems of the plant grow, the vegetative growth will be too prosperous, and the growth of the melon will be inhibited. 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 the Kangpeng No. 8 liquid fertilizer 100 ml/mu spray plant tops, regulate nutrients for fruits, control strong growth , reduce melons. Fourth, the temperature is too low When the temperature is lower than 20°C during the daytime, the cucumber leaves cannot be used for photosynthesis. If the malnutrition occurs for three consecutive days, empty cucumbers will appear. 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 Mixture of 100 g + 14 kg water; in the low temperature season every 15-20 days, flushing and rooting a rooting agent to improve the anti-freezing and weak light resistance of the plants. Use 1 kilograms of root-strengthening agent and 5% Naphthyl Acetate 400 -500 ml, with Jingnong bio-fertilizer. V. Potassium deficiency The ratio of nitrogen, phosphorus, and potassium needed for cucumber production is about 5:2:6, and 78% of the potassium is absorbed by fruits. If potassium is insufficient, it will turn into melon. Preventive measures: Basal fertilizer applied 25-50 kg of high quality potassium carbonate per acre in the case of applying organic fertilizer; spraying 99% high-purity potassium dihydrogen phosphate on a regular basis during the period of nectarine treatment; Nitrogen and phosphorus fertilizers to prevent potassium absorption. VI. Diseases and melons Cucumber is often lost in downy mildew, gray mold, and black spot disease, and the photosynthetic ability of the affected plants is poor. 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 25g + power pioneer 40g + 99% high purity potassium dihydrogen phosphate 50g, foliar spray high yield + foliar fertilizer. Copper preparations are advocated to prevent fungi and bacterial diseases, and zinc, silicon and molybdenum preparations are used to prevent and control viral diseases.
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