Multi-membrane-covered cultivation of sweet melon

First, the cornices were arranged before the winter to select the fields where watermelons had not been grown for many years, and greenhouses with widths of 5 to 6 meters and lengths of 25 to 50 meters were constructed and drainage and drainage channels were opened. 10-15 days before planting, a large greenhouse film warms up. Watermelon uses double color ice cream, early spring red jade and Other varieties. Muskmelon is mainly selected from the West Bolotuo variety. Second, nurture strong seedlings with a high topography, well-drained, and well-lighted conditions. Melon sowing time is mid-December. Watermelon sowing time is in mid-late January. Immerse germination before sowing, soak 1 seed per pod, evenly cover 1.5 cm of seed soil, cover the film and add a small shed to moisturize. Pay attention to the regulation of temperature and humidity at the seedling stage. Third, transplanting transplanting melon transplanting time is in the middle and late January, watermelon transplanting time in late February, generally in the seedling seedling age of 35 days, there are 3-4 true leaves transplanting. 8-10 days before transplanting, the ditch is 30-40 cm wide in the middle of the greenhouse, 60 cm wide and 20 cm wide on both sides, 500 kg of organic fertilizer per standard greenhouse (180 m2), 10 kg of imported compound fertilizer, and 15 kg of ammonium sulfate. , Biological potassium fertilizer 0.5 kg as base fertilizer. Flatten the surface and then cover the film. According to the spacing of 40 cm, the seedlings were planted with watering seedlings on the surface of the seedlings. Water was poured into the living trees, the covers were covered with plastic mulches, and the small sheds, sheds, and sheds were insulated. Fourth, field management (1) greenhouse temperature control. No air ventilation is required during the first week after transplanting, and straw is kept at night to keep the night temperature above 12°C. Keep the temperature of the shelf below 25°C after living. The flowering period maintains a temperature of 18°C. (2) Lighting management. Multi-layer coverage has a great influence on lighting. During the growing season, the cold-resistant opaque cover must be exposed as soon as possible, and if the climatic conditions permit, the number of cover layers should be reduced. (3) fertilizer and water management. Due to the difficulty of top dressing under multi-layer covering conditions, basal fertilisers are generally reused, resulting in 30 kg of ammonium bicarbonate per acre. (4) Plant management. Melon whole vine method: melon seedlings four-leaf when the heart to pick up, until the child vine grows to 10-15 cm long, choose to leave two healthy son vines, the remaining sub-cranes were all removed. When the ranch grows to 20 knots, it is topped, and the vine spreads over the vines 5-6. Whole watermelon vine method: When the main cranberry grows to 20-30 centimeters in length, choose to keep two robust side vines and remove all Others. The main vines are topped in 35-40 leaves, and the lateral vines are topping at 25 leaves. (5) keep flowers and fruits. The best watermelon melon section is section 10-13. In the part that needs to stay in the melon, the female flower is evenly sprayed with a set hair. Watermelon carries out artificial pollination on the second female flower and sprays it with fruit. (6) Pest control. According to the criteria for the production of pollution-free fruits and melons, it should prevent and control seedling defoliation, powdery mildew, viral diseases, downy mildew, aphids, etc.

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