Watermelon is one of the most popular fruits in summer, but its growth requires a large amount of nutrients. Fertilizing watermelon at the right time and in the right way can improve its yield and quality. Let's learn how to scientifically apply topdressing!
I. Understand the growth cycle and nutritional requirements of watermelon
During the process of watermelon from germination to fruit maturity, it requires nutrients for different stages. In the seedling stage, nitrogen is the main nutrient element; in the vine growth stage, phosphorus and potassium are the main elements; in the fruit expansion stage, potassium is the main element.
II. Understand soil and climate conditions
Different soil types and climate conditions have a great impact on the growth and development of watermelon. When choosing a fertilization method, it needs to be adjusted according to soil and climate conditions.
III. Choose suitable fertilizers
Watermelon needs various nutrients, and you can choose different types of fertilizers such as organic fertilizers and chemical fertilizers. However, different fertilizers have different characteristics and need to be selected according to the specific situation.
IV. Apply appropriate topdressing in the seedling stage
In the watermelon seedling stage, appropriate topdressing is needed. It is generally recommended to use organic fertilizers with high nitrogen content, applying 5-10 kilograms per mu.
V. Apply topdressing in time after flowering
After the watermelon blooms, topdressing should be done in time. It is recommended to use chemical fertilizers with high potassium content, applying 2-3 kilograms per mu.
VI. Apply appropriate topdressing during the vine growth stage
After the watermelon enters the vine growth stage, appropriate topdressing should be applied. It is recommended to use organic fertilizers with high phosphorus content, applying 10-15 kilograms per mu.
VII. Focus on potassium elements during the fruit expansion stage
In the watermelon fruit expansion stage, the demand for potassium is high. You can use chemical fertilizers with high potassium content, applying 5-7 kilograms per mu.
VIII. Pay attention to fertilization methods when applying topdressing
When applying topdressing, pay attention to the fertilization method. You can spread the fertilizer evenly on the ground, then lightly plow and cover it in the soil.
IX. Prevent "honeybee" topdressing
During the topdressing process, do not concentrate fertilization all at once. It should be done in stages and batches to avoid burdening the watermelon.
X. Pay attention to the concentration and dilution of fertilizers
When applying chemical fertilizers, pay attention to the concentration and dilution of the fertilizers. It is generally recommended to use them according to the instructions on the packaging.
XI. Regularly test the soil for fertilization
During the growth of watermelon, nutrients in the soil will gradually be lost. It is necessary to regularly test the soil and apply fertilizer to ensure that the watermelon gets enough nutrients.
XII. Pay attention to the timing of topdressing
When applying topdressing, pay attention to the timing. It is best to apply topdressing in the morning or evening on a clear day to avoid the adverse effects of strong sunlight or high temperatures on the plants.
XIII. Pay attention to the balance of water and fertilizer
The growth of watermelon requires an appropriate amount of water and nutrients. At the same time as topdressing, it is also necessary to pay attention to the balance of water and fertilizer to avoid excessive or insufficient application.
XIV. Pay attention to changes in the plants
During the topdressing process, it is necessary to pay attention to changes in the plants. If poor growth, yellowing of leaves, etc., are found, the topdressing method should be adjusted in time.
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A high yield of watermelon is inseparable from scientific topdressing methods. Understanding the growth cycle and nutritional requirements of watermelon, choosing suitable fertilizers, paying attention to the concentration and dilution of fertilizers, preventing "honeybee" topdressing, and other methods can help us improve the yield and quality of watermelon.