30 million or more. Melon growth period requires sufficient light, an average of 12 hours of light per day, which is conducive to the development of strong plants, for the late increase in yield to lay the foundation. Melon fruit expansion period, to control the temperature in the greenhouse greenhouse at the right time, the optimal temperature during the day at about 30 degrees, the night temperature control at about 20 degrees, such a temperature is conducive to the accumulation of sugar melon, the output of high-quality melon. The yield of 400-600 pounds per acre, the gross income per acre can reach 7000 yuan -9000 yuan. Planting hanging melons is divided into two seasons of about three months each. Once in winter and once in summer, but the winter yield is not high, only about 400 pounds, not up to 600 pounds. Summer yield is OK, up to 600 pounds. So 10 acres of land can earn more than 300,000 yuan.