Question: The reader with the mobile phone number 6259 asks how to improve the quality of watermelon.
Li Junfa A: To improve the quality of watermelon, the following two methods can be used:
Scientific fertilizer: The demand for the three elements of watermelon is potassium, nitrogen and phosphorus in order of high and low, and potassium has a great influence on the quality of watermelon. Therefore, fertilization should be based on farmyard manure. Watermelon avoids chlorine, and it is not possible to apply ammonium chloride, potassium chloride and other chlorinated fertilizers. Such as the application of 50 kg of cake fertilizer, can significantly improve the quality of watermelon. In addition, the main period to ensure that the foliar fertilizer has an important influence on the quality of watermelon is 10 to 15 days before harvesting. At this time, the root system has begun to age, and the pests and diseases are harmful, the leaves are yellow, the shedding is severe, the photosynthetic area is reduced, and the sugar is divided. The accumulation has a great impact. Therefore, in addition to the application of basic fertilizers, especially fertilizers with long-lasting fertilizers, it should also cooperate with foliar spray fertilizer to actively control pests and diseases and prevent premature senescence of plants.
Reasonable irrigation: In order to increase the yield in the early stage of watermelon growth, it is necessary to irrigate in time. However, in the later stage, especially one week before harvesting, the water must be strictly controlled. At this time, it is necessary to drain and reduce the water in time. Excessive moisture will not only greatly reduce the sweetness of the watermelon, but also cause cracking.
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