In the production process of watermelon, due to adverse factors, there are often problems of difficulty in sitting and deformed fruit, which reduces yield and commerciality and directly affects the income of growers. The reasons why watermelons are difficult to deform are as follows:
When encountering abnormal climatic conditions during the flowering and fruiting period of watermelon, high temperature, low temperature, rainy rain, drought and other adverse climatic conditions will cause abnormal growth of watermelon plants, plant growth decline, watermelon ovary dysplasia or thinness, especially continuous The rainy weather will make the watermelon unable to pollinate and fertilize normally, causing serious imbalance of vegetative growth and reproductive growth, the plant is mad, and the vegetative growth is excessive, resulting in a large number of young fruit-melting phenomenon, which leads to the difficulty of sitting watermelon, sitting late, and deformed fruit. Serious consequences.
Improper management of fertilizer and water, the application rate of nitrogen fertilizer is too large. If the fertilizer and water are not properly managed in the growing season, the plant will be malnourished, and the stems and leaves will be prolonged, resulting in falling flowers or melons. Especially when the application of nitrogen fertilizer is too large, the phosphate fertilizer and potassium fertilizer are insufficient. It is easy to make the plant grow longer and lower the rate of sitting.
Watermelon flowering pollination female pollination poor watermelon during flowering, if the temperature is low, it is not conducive to insect activities, affecting insect pollination, will also reduce the fruit set rate. Such melon fields should be artificially assisted in pollination. If the female flowers are unevenly pollinated, it will cause a problem of low fruit setting and fruit malformation.
Insufficient understanding of the characteristics of the varieties, failure to achieve good varieties of good methods for understanding the characteristics of watermelon varieties is not enough, can not be based on the characteristics of the varieties of cultivation management, especially for large fruit type watermelon in the flowering and fruiting period to control the fertilizer, assisted artificial pollination The measures are not in place, and have nothing to do with the quality of watermelon seeds.
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