Cultivation factors causing watermelon not to sit on watermelon

The main cultivation factors that cause watermelon not to sit on melon are: first, improper selection of varieties. Some watermelon varieties are born late and sparse, and are easy to grow in vain. Second, the melon leaf vine is overlaid and masked, and the ventilation and light transmission is poor. The planting density is too high and it is not caused by pruning and branching in time. Third, improper fertilizer and water management, especially excessive application of nitrogen fertilizer, lack of phosphorus and potassium fertilizer, plant nutrition imbalance, excessive growth of stems and leaves, resulting in falling flowers or melons, reducing the rate of melon setting. Fourth, the harm of diseases and insect pests, resulting in poor development of melons and flowers, or poor pollination, resulting in melon phenomenon.