Avoid partial application of nitrogen fertilizer if partial application of nitrogen fertilizer, easily lead to leggy, affect the sitting rate, reduce the number of melon, reduce sweetness, delaying maturity.
Avoid application of chlorine fertilizer in watermelon dressing fertilizer should not be applied chlorine, such as ammonium chloride, potassium chloride and so on. Applying chlorine-containing fertilizer will affect the accumulation of sugar and make the melon taste lighter.
Bogey top layer fertilization Summer temperatures are high, thunderstorms are more, fertilizer applied to the topsoil, not only nutrients easily evaporate, but also will be wetted by rain. Fertilization should be performed in a deep hole between the two plants, then cover the soil to improve fertilizer efficiency.
Avoid too close to the roots of fertilization with the extension of melon vines, the root system will gradually expand, if the near root fertilizer, fertilizer not only can not be fully absorbed and utilized, and there will be burning phenomenon. Therefore, fertilization should be based on the extension of vines, from the near and far gradually applied in the far away from the plant in order to facilitate the absorption of watermelon roots. General requirements about 15 cm from the main root.
Avoid rainy days fertilization Rainy weather Humidity, soil moisture is high, the fertilizer is easy to lose, and leaves vines long, crisp and tender leaves, easy to induce pests and diseases.
Avoid drought when the fertilization soil fertilization in dry soil will make the cytosol solution out of the roots, causing the separation of the cytoplasmic wall, resulting in physiological water loss of watermelon vine leaves withered until the plants die. Therefore, in dry weather and low soil moisture content, watering or watering should be performed first to moisten the soil and then apply fertilizer.
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