Improper variety selection
Now my country's agricultural technology is more and more developed, and its planting technology is gradually mature. Therefore, the improvement of the variety is also very good, and in most cases, the skin is getting thinner. But even so, the thickness of the watermelon melon skin will have thick skin and thin skin because of the variety. Among them, the thin-skinned varieties have two types: skin-tough and crisp-skinned. Generally, small and medium-sized varieties are thin-skinned. On the contrary, if it is a late-ripening large watermelon variety, most of them are thick-skinned watermelons.
Planting environmental impact
During the growth period of watermelon, the climate has a direct influence on the growth of watermelon. Especially during the watermelon flowering period and fruit expansion period, if it encounters continuous rainy days, low temperature and low light environment, it will affect the watermelon fruit setting, and for the fruit that has been seated, it is easy to cause the phenomenon of hollow skin thickness . Especially for the watermelon cultivated in the open, the probability of hollow skin thickness is higher. Therefore, when planting watermelon, we must pay attention to control the planting environment according to the weather changes to ensure the normal growth of watermelon.
Lack of fertilizer
Compared with other fruits, the growth period of watermelon is shorter, but it has a larger growth and yield. Therefore, the demand for watermelon fertilizer is still relatively large, and we must pay attention to coordinate the use of organic fertilizer and chemical fertilizer when fertilizing. And also pay attention to the proportion of other nutrients, especially nitrogen fertilizer. The nitrogen fertilizer content should not be too high, if too much nitrogen fertilizer, it is easy to cause hollow skin thickness of watermelon. Then, during the expansion stage of the watermelon fruit, it is necessary to pay attention to the indispensable water to avoid excessive moisture to cause the fruit to end the expansion stage to mature early, resulting in the phenomenon that the cells are not full and the hollow skin thickness appears.
Management did not keep up
When the watermelon bears fruit, it is necessary to control the watermelon retention position. The melon section should not be too low, otherwise it will easily lead to thick skin of the watermelon fruit. In addition, in order to be able to bring the watermelon to market earlier, many people pollinate the first female flower within 10 knots to promote the result, which leads to a low melon section and thick skin. The disorder of boron element is also one of the main causes of the thick watermelon hollow skin. Boron has the effect of promoting early ripening, improving quality and enhancing stress resistance of watermelon. If boron is lacking, it is also very unfavorable for the growth of watermelon.
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