Prepare a nutrient soil. Fertilize the unfertilized soil and fully ferment and decompose chicken manure or large manure by sieving at a ratio of 7:3. For each cubic meter of nutrient soil, 2.5 kg of superphosphate, 0.5 kg of potassium sulfate, and 15 to 20 g of 95% mildew were added. Electric heating hotbeds are needed to build seedbeds 24 to 26 square meters per mu. The seedbed is 1 to 1.2 meters wide, 10 to 12 meters long and 12 centimeters high. The bottom of the bed is first covered with a layer of plastic film. The film is evenly spread with 3 cm thick dry straw or sawdust, and the wheat straw is covered with a layer of plastic film. Spread 2 cm thick clean coarse gravel as the irrigation layer on the film, cover the nutrient soil with a thickness of 10 cm, and then irrigate the water. After the water penetrates, cut 10 cm square to lay the electric heating line. The seedbed is lined every 10 centimeters wide. The center part is laid every 20 to 30 centimeters wide. After straightening, it is pressed into the slit of the seedbed. The depth is flush with the bed surface, or 0.1 to 0.3 centimeters below the bed surface. Electric heating wire is externally connected to the temperature controller and power supply. A small shed is placed on the seedbed and covered with grass and film insulation at night. Laying an electric heating line on the bed can directly heat the soil around the seed. Because the film is covered with nutrient soil and dried wheat straw, heat can be prevented from being transmitted and electricity can be saved. After the electricity is turned on, the soil temperature is high, the seeds germinate quickly, the emergence is early, the root system is developed, and the seedlings are short. Seed sterilisation and germination sowing and seeding sowing seeds to go to the miscellaneous and inferior, drying seeds for 1 to 2 days, after the sun with "Tianda 2116" (200 times liquid, dip seed dressing special type) mixed with 95% of the mold Ling (3000 times Liquid) soaking for 30 minutes, then soaking in warm water at 55°C for 30 minutes, finally soaking in 30°C clear water for 4 to 5 hours, removing and draining, placing in the thermostatic chamber at 25～30°C, germinating in 24 hours The inside of the box is frozen at a temperature of -2 to 0°C for 4 to 6 hours, and then warmed up in a well water for 20 minutes. The water is drained to continue germination. After 12 hours, it is frozen again. Most of the seeds can be sown in white. The seedbed was soaked with warm water until the surface of the soil became discolored, and 1 seed was placed in the middle of each nutrient soil block. The radicles faced down or laterally, and the cover soil was 1.5 to 2 cm after sowing. Seed management after sowing electricity heating, covered with straw and plastic film insulation, temperature control at 25 °C in order to facilitate early emergence. When the seedlings are unearthed, the electricity is cut off. As long as the bed temperature is not lower than 15°C, electricity is no longer supplied. Remove the grasshoppers during the day, and remove the small arch shed film, so that the melon seedlings see the sun more, at night covered with double layer without straw and grasshopper insulation. The bed temperature is controlled at 25~32°C during the day, 18~20°C at night, and no lower than 15°C. When there are more than two true leaves in the seedlings, they can be removed at night and only covered with grasshoppers, maintaining the temperature at 15 to 18°C, increasing the temperature difference to facilitate the differentiation of female flowers. For seedlings cultivated with double or multiple vines, topping at the time of 4 to 5 leaf stages can be transplanted with lateral vines. Single vine pruning melon seedlings, 3 leaves 1 colonization at the time of the heart. In order to nurture strong seedlings, cover the opaque coverings during the seedlings as early as possible to extend the light exposure time. When the seedlings are in the 2-leaf stage, they are sprayed 1 to 2 times with “Tianda 2116†(1000 times liquid, strong seedling-specific type) plus 95% mildew (3000 times liquid) to prevent seedling disease and promote seedling growth. If it is planted heavily, grafted seedlings can be cultivated for the prevention of soil-borne diseases such as blight. Medical Safety Goggle,Surgical Face Shield,Eye Protection Goggle,Nonwoven Medical Surgical Cap Guangzhou Aikangli Medical Technology Co., Ltd. , https://www.aikanli.com