How to make melons and fruits sweeter

Enlarge the temperature difference between day and night

The larger diurnal temperature difference is beneficial to the accumulation of photosynthates (sugars). In the fruiting period of muskmelon, the diurnal temperature difference should be enlarged as much as possible. Generally, the temperature in the shed is maintained at 30 degrees Celsius to 35 degrees Celsius during the day, 13 degrees Celsius to 14 degrees Celsius at night, and the temperature difference between day and night is maintained between 16 degrees Celsius and 18 degrees Celsius.

Apply less chemical fertilizer and more organic fertilizer

Giving priority to organic fertilizer and no or less application of chemical fertilizer is another effective measure to improve the sweetness of muskmelon. General organic fertilizer to chicken dung, bean cake-based, can be 15 cubic meters per mu of chicken manure, bean cake 100 to 150 kilograms.

Increase the application of potash fertilizer in the fruiting period

Potash fertilizer 8 to 10 kg per mu or high potassium compound fertilizer 20 kg per mu can be applied in the early stage of melon.