1. Re-applying organic fertilizers and reducing chemical fertilizers: Organic fertilizer is the main method, and no or less application of chemical fertilizers is an effective measure to improve the sweetness of muskmelon. General organic fertilizers mainly include biogas residue, straw rot, chicken manure and bean cake. The chicken manure that can be cooked per mu is 15 cubic meters and the bean cake is 100-150 kilograms. 2. To increase the temperature difference between day and night: The larger temperature difference between day and night is conducive to the accumulation of photosynthetic products (sugars), and the temperature difference between day and night should be widened as much as possible during the fruiting period of melons. In general, the daytime temperature in the shed is kept at 30~35°C, the nighttime temperature is kept at 13~14°C, and the temperature difference between day and night is kept at 16~18°C. 3. Reasonable increase of potassium fertilizer: In the case of low soil nitrogen and high potassium, the sweetness of melon will be significantly reduced. Therefore, the amount of nitrogen fertilizer and potassium fertilizer should be reduced in the melon melon period. It can be used in the early stage of melon irrigation with potassium per unit of 8 to 10 kilograms of potassium fertilizer or 20 kilograms of high-potassium compound fertilizer. 4. The appropriate control of water: the maturity of soil moisture in melon is too large, not only will reduce the sweetness of melon, but also prone to "water rotten melon." Especially in the 10 days before the ripening of melon, we must pay attention to water control. 5. Increase the light: the shed film should be ground rubbed, do not have water drops, the leaves of the melon around the shade should pay attention to thinning, in order to increase the transparency between plants. 6. Appropriate harvesting: General melon development 30 to 35 days to fully mature, sugar content is high, the flavor is good. However, for the morning market, some melon farmers often harvest early and reduce the sweetness of melons. Proper harvesting is the basic measure to ensure the sweetness of muskmelon.
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