We mainly produce greenhouse watermelons or small shed watermelons, which have been registered as national geographical indication trademarks: "Guandiwa" watermelon, "Guandiwa" watermelon and muskmelon were awarded the honor of "Yantai Top Ten Famous Melons" title. Watermelons are large, highly sweet, and have few deformities. The yield and quality of watermelon have a great relationship with fertilization, especially the sweetness of watermelon. The amount and type of fertilizer applied are a decisive factor. Watermelon has a high yield and requires a lot of fertilizer. For every 1,000 kilograms of watermelon produced, 3 kilograms of nitrogen are needed. Although watermelon requires a relatively large amount of fertilizer, its root system is relatively fragile, and it is easy for the root system to be burned due to excessive fertility. During the entire growth process of watermelons from seedlings to maturity, there are varying degrees of changes in the absorption of various fertilizers. If you want watermelons to grow big and sweet, fertilization is necessary. There are about ten kilograms of urea per mu of land. Also want cake and fat. Some animal droppings can also be used. Do not covet his abundance. If there are too many, the ones that grow are too small. It is best to leave one in good condition. Just keep the soil moist.

Compound fertilizer: The proportion of compound fertilizer required by watermelon is low nitrogen, medium phosphorus and high potassium. You can use compound fertilizer with acceptable quality, about 70 to 80 pounds per acre, or use a single nitrogen, phosphorus and potassium fertilizer, such as nitrogen fertilizer. Use 20 kilograms of urea, 80 to 100 kilograms of superphosphate for phosphate fertilizer, and 25 to 30 kilograms of potassium sulfate per mu for potassium fertilizer. When we apply base fertilizer to watermelons, we mainly use decomposed organic fertilizers. The amount of fertilizer applied per acre is about 4000 to 5000 kilograms and 15 to 20 kilograms of urea. Such nutrients are very suitable for changing the fertility of the soil. .

I will briefly explain this. It is most suitable to use 3,000 kilograms of well-rotted farmyard manure per acre of land. This can make the soil loose, breathable, organic and nutritious, and then add special watermelon fertilizer later. Such watermelons grow sweet and big. I am a farmer in a rural area, so when I apply base fertilizer, I add some phosphate fertilizer and organic fertilizer, and wait until the watermelon seedlings grow.