As the saying goes, good soil, good roots, good trees, good water and fertilizer can grow good crops! As one of the fruit varieties with high economic value, water and fertilizer management is the key to ensure the quality and yield of watermelon. So how to manage water and fertilizer during watermelon expansion? Next, this article will give you a detailed introduction!
1、 Water management measures
Watermelon needs to consume a lot of water during the expansion period. Generally, watering should not be too early. Usually after sitting. If the water is insufficient during expansion, not only the melon is small, but also the pulp is easy to become hollow and soft. However, heavy water irrigation is not recommended, and the soil should be kept wet. It is recommended to use watering with water and fertilizer and stop watering within one week of the harvest period.
2、 Strengthen the supply of phosphorus and potassium nutrients
During the expansion period of watermelon, the content of phosphorus and potassium usually needs to be increased, especially the demand for potassium is strong. Fertilization can be divided into two periods in the expansion period. The first period is from sitting melon to goose egg size. At this time, nitrogen, phosphorus and potassium fertilizers must be considered. During fertilization, do not use it too close to the root system to avoid burning the root system. If watermelon leaves show symptoms of lack of nutrition, it is also recommended to add water-soluble fertilizer with medium and trace elements.
3、 Keep leaves healthy and improve plant vitality
In the expansion stage of watermelon, if the leaves turn yellow or rot prematurely, it will directly affect the maturity and quality of watermelon. In order to keep the leaves healthy and prolong the functional period of the leaves. In the expansion stage of watermelon, it is necessary to adjust the position of watermelon in time. Don't expose watermelon to the sun. You can cover it with leaf mulch or other weeds. During the expansion period, the overall management of the water pipe is to strengthen the intake of phosphorus and potassium fertilizer, control the application of nitrogen fertilizer and strengthen water supply.