In winter and spring, the melons in the greenhouse are usually planted every year from November to December. In order to ensure that all seedlings are seeded and seedlings are seeded and seedlings are planted after seeding, seeds need to be pre-treated before seeding. First, choose the seeds to be removed from the barrel or the packaging bag, placed on a clean wooden board or on the table hand-selected. Remove the seeds of malformation, mildew, damage, and insects, and select seeds that are full and uniform. Second, the sun seed will be a good choice of evenly spread on a clean sheet of paper or straw mat, choose sunny, sunny, sunny weather. Turn once every 2 hours to make the seeds evenly exposed to sunlight. Through drying, promote seed ripening, enhance seed vigor, increase germination potential and germination rate of seeds; at the same time, ultraviolet rays and higher temperature in sunlight can kill some pathogens carried on seeds, and reduce the occurrence of diseases transmitted through seeds. And the more dry the seeds are, the faster the water absorption rate will be for seed soaking. Third, the disinfection method generally uses warm soup. Add about 55-60°C of hot water to a clean chinaware or glass container. The amount of water added is preferably 5 times the seed volume. Put the sun-dried seeds into the hot water and scald them, while gently stirring in the same direction with a glass rod or stick. Add hot water at any time, keep the temperature of 55-60°C for 20-30 minutes, make the seeds fully heated and heat evenly. Then no longer add hot water to continue stirring, until the water temperature dropped to about 28-30 ° C, remove the seeds, drain water, ready to soak. D. Seed Soaking The seeds of the poison drained water are put back into the original container and poured into warm water of 28-30°C. After that, hot water is often added to maintain the temperature of 25-30°C. After soaking for 6-8 hours, pour the seeds into a larger container and gently scrub them to remove the mucus from the seeds. (Since mucus contains substances that inhibit seed germination, the seeds are washed to help germinate the seeds.) . After the mucus has been rinsed, rinse the seeds with water. 5. Precipitate Drain the soaked seeds with water and wrap them in a clean wet gauze wrapped around the gauze with a clean wet towel to prevent water evaporation. Then place the seed in the prepared container at the bottom of the container, insert a thermometer near the seed in the container, increase the temperature and keep warm with a fire cooker, electric blanket, etc., check the temperature of the thermometer frequently, and control the temperature at 25-28°C. between. The seeds are often turned during germination to eliminate the carbon dioxide and respiratory heat generated by the seed respiration, exchange fresh air, and supply enough oxygen. Under suitable temperature conditions, budding can occur in about 24 hours. Seeds can be sown when the seeds begin to bloom. When germination, try to control the length of the bud within 0.5 cm to prevent germination. When the buds grow too long, they are easily broken and will reduce the emergence rate. Transparent Respirator ,disposable oxygen mask,Disposable Respirator,Bag Respirator Jiangsu Yongle Medical Technology Co., Ltd. , https://www.jsylmedical.com