One is 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 maintained at 30°C-35°C, and the nighttime temperature is maintained at 13°-14°C. The temperature difference between day and night is maintained at 16°C-18°C.
The second is to use less fertilizer and reuse organic fertilizer. The use of organic fertilizers as the main factor and the indiscriminate application of chemical fertilizers is another effective measure to increase the sweetness of muskmelons. General organic manure is mainly chicken manure and bean cake, and 15 m3 of chicken manure and 100-150 kg of bean cake can be cooked per mu.
The third is to increase potassium fertilizer during the melon period. In the case of low potassium levels in the soil, the sweetness of melons will be significantly reduced. Therefore, the amount of nitrogen fertilizer and potash fertilizer should be reduced during the melon melon period. In the initial stage of melons, it is possible to flush 8-10 kilograms of potash per acre or 20 kilograms of high-potassium compound fertilizer.
The fourth is to control water before ripening melons. The excessive soil moisture in ripening melon will not only reduce the sweetness of melon, but also lead to "water rotten melon." Especially in the 10 days before the ripening of melon, we must pay attention to water control.
The fifth is to maintain sufficient light. The shed film should be cleaned frequently, and the shaded leaves of the melon must be carefully removed to enhance the transparency between the plants.
Sixth, it is suitable for harvesting. Generally melon development can be fully matured within 30-35 days. The sugar content is high and the flavor is good. However, at present, some melon farmers often harvest early for the morning market, which seriously reduces the sweetness of melons. Therefore, proper harvesting is the most basic measure to ensure the sweetness of muskmelon.
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