Variety selection: should choose strong growth, high yield, disease resistance, high-quality late-maturing varieties, such as King Feng Bao, King Long Po, King Mibao and other construction sheds and site preparation to do: 1 build shed. Choose sandy loam with high topography and good irrigation and drainage conditions, and plant north-west arched greenhouses with a width of 6.8 to 13.6 meters, an arch height of about 2 meters, a shed length of 40 to 50 meters, and a 0.07 mm polyethylene non-drip membrane for the film. Fertilization. After the harvest of the former loquat crop, plunge over 20 centimeters or more, 2-3 times of leveling, every 5000 hectares of 1/15 hectare (1 mu) of compost, 100 kg of special fertilizer for watermelon, and stratification according to 3-4 The rice strips are applied with a width of 0.6-0.8 meters, so that the soil fertilizer is evenly mixed. 3 Tricks. After fertilizing the soil preparation, the sorghum type is used, with a height of 25 centimeters, a width of 60 centimeters, and a rachis distance of 3-4 meters. Both sides of the raft should be shaped like a turtle shape or zigzag. 5-7 days before colonization, water was poured on both sides of the Shuangguagou, and foot-planting was made in order to cool down the seedlings. The appropriate sowing, nurturing strong seedlings: 1 nursery methods. The use of shade net grafting seedlings can be nursed in the early spring watermelon seedling shed or ordinary shed. 2 seed processing. Soak the seed with 10% disodium phosphate solution for 10-15 minutes, remove and rinse with water, then put in fresh water and soak for 3-4 hours, and put it on a germination bed at 30°C to germinate when the bud is about 0.5 cm long. The live broadcasters may have 1 tablet per pot, 1.5 centimeters of cover soil, and the grafted should be sowed on the seedbed or seedling tray. 3 Grafting seedlings. The rootstock uses a gourd, grafting using the top insert method. Rootstock seeds should be sown 5-7 days in advance. 4 Management after grafting. After grafting, the initial period should be cooling, shading, and moisturizing. After 4-7 days of grafting, it gradually ventilated and exposed to light. After 7 days, ventilation can be gradually increased to reduce the sunshade. At the same time, attention should be paid to water spray, cooling, and moisturizing at noon, and pests and diseases should be promptly controlled. Colonization: In late August, the watermelon seedling age is 30-35 days. Plants can be colonized when they have four leaves and one heart. 5-7 days before colonization, two deep ditches of 10-12 cm are planted on the sorghum. Water in the ditch, plant the seedlings at a spacing of 56 cm x 65 cm, apply a fungicide such as carbendazim, and then cover the soil, cover the silver-gray mulch, and plant 600-700 plants per 1/15 ha.
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