| Abstract: In view of the practical problems such as obvious soil obstacle, low yield, declining quality and aggravation of pests and diseases in solar greenhouse cultivation of muskmelon in Kazuo county, Liaoning province, the above problems were alleviated by changing the traditional fertilization method. On the basis of rational application of organic fertilizer, according to the soil nutrient status of greenhouse and muskmelon fertilizer requirement law, the application type, proportion, quantity, optimum fertilization stage and method of fertilizer were studied, and a set of high yield and high efficiency fertilization technique suitable for muskmelon cultivation with a large crop one year in solar greenhouse in Kazuo area was explored. Starting from different growth and development stages of muskmelon, reasonable fertilization methods such as proper application of seedling fertilizer, application of sufficient base fertilizer, topdressing according to different growth and development stages, foliar spraying fertilizer, appropriate application of trace element fertilizer were summarized. The yield of muskmelon in greenhouse increased by 905.61 kg per 667 m2 compared with farmers' customary fertilization, and the benefit increased by 5 433.66 yuan per 667 m2 . |