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Appropriate application of fertilizer is the key to seize the high yield and quality of watermelon. In recent years, according to the characteristics of watermelon requirement fertilizer, we have passed through many experiments and demonstrations, and initially grasped the high-yielding fertilization technology of watermelon, specifically summarizing the implementation of "five fertilizers." (A) enough base fertilizer. As the saying goes, “Three catch-ups are not at the bottomâ€, “base fat gold, and top-dressing silver†all illustrate the importance of basal fat. Basal fertilizer should be mainly manure, soil miscellaneous fertilizer, oil cake fertilizer, human waste and other organic fertilizer, with the application of nitrogen, phosphorus, potassium and other fertilizers. The average medium fertilizer land is 3,000 m3 per 667 m high quality manure, 80 kg cake flour, 8-10 kg urea, 25--30 kg phosphate fertilizer, and 7--8 kg potassium sulfate. After transplanting soil, transplanting melon seedlings. (b) Lightly apply Miaotian. Live seedlings or transplanted live trees to Lateng fertilizer should be light, excessive too thick will burn root injury seedlings. General lean or basal deficiencies in the field, should be poured into two sparse fecal water and fertilizer, interval 7-10 days Shi applied once; good soil, pediculous foot, seedlings strong Wang Tian plots, can not chase seedlings. (c) Qiao Shifei fat. Watermelon vines depends on the growth potential, medium-grade melon seedlings, 20% of manure water for every 667 m 2 of 30 manure, 2-3% of urea, 7-8 kg of phosphate, and 6- 7 potassium sulfate. Kilograms, mix and apply after the application of acupuncture, cover soil after application. For hypertrophic melon fruit, the basal fertilizer was applied without adding urea. (d) reapply melon fertilizer. Promotion of guava fertilizer should be applied in two separates. After the young cucumbers are firmly seated and applied for the first time, they are applied for a second time between 7 and 8 days. Generally, every 667m2 uses 1 ton of manure fertilizer, adding urea 2- 3kg, phosphorous fertilizer 4--5kg, potassium sulfate 3--4kg. Mix and apply. (E) Suitable for leaf fertilizer. Watermelon enlargement period, to increase the yield of sweet watermelon or yellow leaves, dehydration, premature aging of the melon fields, can be added in 1 kg of urea spraying 1-50 times per 50 kg of potassium dihydrogen phosphate aqueous solution.