Artificial Pollination Improves Product Quality For the watermelon field that has not been established yet, it is necessary to continue the artificial pollination work and improve the quality of the commodity melon. When pollination should choose the main ranch second or third female flower, pollination time in the morning from 7 to 9 o'clock in the rainy season, male flower loose powder, can be delayed pollination time. After pollination, it is best to make a mark in order to accurately determine the ripening date of watermelon and facilitate harvesting. For the first batch of melons that had been enlarged and the plant growth was still good, the second batch of melons could be chosen for larger melon embryos. Sparse fruit to maintain fruit quality When the normal development of watermelon fruit grows to the size of the egg, it indicates that the melon has settled. At this time, artificial fruit thinning is needed to ensure the quality of the commodity melon. Sparse fruit, fruit cracks, malformed fruit, and excessive young fruit, ensuring that one fruit in the middle-fruit type of watermelon leaves one fruit, and one fruit in the small-fruit type watermelon leaves one to two fruits. Scientific fertilization promotes fruit enlargement Watermelon enlargement period is also the peak of fertilizer and water, so it should be applied to watermelon in the expansion period. It is recommended that watermelons cultivated in spring should be applied with a 20- to 25-kilogram compound fertilizer per acre and a 100-fold water solution via a dropper. The melon seedlings should be grown once or twice, and 5 to 10 kg of sulfuric acid per acre can be added. Potassium. The specific amount of fertilizer should also be increased or decreased according to the amount of basal fertilizer, the difference in soil fertility, and the growth of plants. Regulate greenhouse temperature and create suitable growth environment For western melons that are currently in the expansion stage, the greenhouse temperature can be appropriately increased to promote fruit enlargement. The daytime temperature can be controlled from 30°C to 35°C and from 18°C ​​to 20°C in the evening. During the first half of maturity, the temperature difference between day and night should be greater than 10°C to facilitate the accumulation of sugar and the improvement of fruit quality. Clean up the ditch and improve the resistance of plants As the temperature rises, the amount of rainwater will gradually increase. Therefore, the Daminggou that responds to fields, fields, and water should be cleared regularly to prevent clogging. Too shallow should be deepened to ensure smooth drainage and promote healthy growth of plants. Strengthen Integrated Pest Management April is the most frequent season of diseases and insect pests in the West Melon. It mainly includes wilt disease, blight, downy mildew, powdery mildew, bacterial keratoderma, and locusts. It is necessary to carry out the principle of prevention and comprehensive prevention and control. Temperature and humidity, improve the resistance of plants, once the pests and diseases are found, it is necessary to control the use of drugs in a timely manner, while paying attention to the safety interval of application.
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In mid-March, the climate is warmer, plant growth is accelerated, and the shift from vegetative growth to reproduction-based growth is a key stage in the growth of melons. Therefore, the production management must focus on the following aspects: 