To improve the yield and quality of watermelon, the amount and technology of fertilization are crucial. So, when is the best time to fertilize watermelon? What is the fertilization method for watermelon?
The Method of Watermelon Expansion Fertilizer
When the diameter of the young melon is about 5 centimeters, a shallow ditch should be opened parallel to the melon ditch at a distance of 30-40 centimeters from the root. Each hectare should be fertilized with 70-100 kilograms of nitrogen and 55-75 kilograms of k2O3. It can also be combined with watering to catch 7500-12000 kilograms of human feces and urine.
The second application is during the peak period of fruit growth, when the diameter of the melon reaches about 15 centimeters. On the other side of the plant, at a distance of 30-40 centimeters from the melon, topdressing with n70-100 kilograms, p2o535-55 kilograms, and k2o75-110 kilograms per hectare.
Before harvesting the first greenhouse melon, the second greenhouse melon is fertilized once after fruiting. Generally, 45 to 60 kilograms of nitrogen and 75 to 110 kilograms of k2O3 are applied per hectare. Mainly to prevent premature senescence of stems and leaves, and to continue healthy growth of plants, in order to facilitate the development of the second greenhouse melon.
The cake fertilizer applied during the topdressing process needs to be fully fermented and crushed, otherwise it is prone to harm from ground maggots and seedling burning.
In the traditional fertilization method, 200-250 grams of cake fertilizer are applied to each plant. However, experiments have shown that as long as n, p, and k are reasonably applied in combination and applied in stages according to different growth stages of watermelon and specific soil and climate conditions, it can replace cake fertilizer. Not only is it beneficial for fruit development without reducing quality, but it can also increase yield and reduce costs.
