Yongchang City, Liuhe Town, Yongcheng City, asked: The many fruits of his family's zucchini have a large navel, which has seriously affected the commercial nature. What are the reasons? How to deal with it? A: The umbilical part of the zucchini is particularly large after being dropped, and it protrudes outwards. The commercial nature is poor, and the vegetable trader is not willing to acquire it. The main reason for the formation is the improper use of wipes, and three points can be effectively prevented. One is to grasp the good time. Most of the zucchini blossoms are open at 4-5 in the morning, and it will be a bit late to wait until the day. Therefore, the time to wipe should be appropriately advanced, and it is most appropriate to use the flowers as early as the first day. The second is to master the concentration of good wipes. The concentration of wiping melon should change with the change of temperature. When the temperature is low, it should be properly increased. When the temperature is high, it should be properly reduced. As the temperature gradually rises at the moment, many vegetable farmers do not know how to reduce the concentration of the ointment. As a result, zucchini has formed a lot of "big navel" fruits. In addition, it is also necessary to: wipe the area of ​​the melon as large as possible, the concentration of the agent as small as possible. This will not only achieve the ideal sitting effect, but also will not appear phytotoxicity, the formation of "big navel." The third is to pay attention to wiping, spraying, and combining. Before wiping the melon, spraying the plants with an anther-free anther can significantly increase the rate of squash sitting on the pumpkin. Artificial flowers can also be used. The method is to remove the male flowers, remove the petals, and apply lightly to the stigmas of the female flowers. Pay attention to uniform stigma pollination. Anesthesia Medical Co., Ltd. , https://www.jssinoanesthesia.com