One bogey single application of large amounts of nitrogen fertilizer. Single application of a large amount of nitrogen fertilizer, the plants are extremely prone to long, is not conducive to flowering melon and fruit development. Before the melon sits melon, the absorption of potassium is increased mainly after sitting on the melon; the amount of nitrogen and potassium are basically the same in the melon's hair removal stage, the absorption in the melon stage reaches the peak, and the melon's maturity stage is nitrogen. Absorption of potassium was significantly reduced, and phosphorus uptake was relatively increased; the ratio of nitrogen, phosphorus, and potassium to three elements, the seedling period should be 3.8: 1 : 2.8, the extension period was 3.6:1: 1.7, and the melon growth period was 3.5: 1 : 4.6.
Second avoid application of chlorine fertilizer. Watermelon is a chlorine-tolerant crop, and the application of chlorine-containing fertilizers (such as ammonium chloride, potassium chloride, etc.) will affect the accumulation of sugar and make the melon taste lighter.
Three avoid excessive application of human excrement. Excessive use of human excreta, can easily lead to plant growth, making it difficult to sit melon, melon skin thick and pickled.
Four bogey fertilization on topsoil. Pay attention to the deep application of watermelon fertilizer, timely covering after application, especially nitrogen fertilizer, if applied, nitrogen can easily evaporate to produce ammonia gas, harm the leaves, but also to reduce the effect of fertilizer.
Five bogey rainy weather fertilization. Rainy weather has high air humidity and high soil moisture. Fertilizer is not only easy to lose fertilizer, but also can cause watermelons to grow.
Six bogey fertilizer sites too close to the root. The fertilization site of watermelon is generally required to be about 10 centimeters from the main root; it is easy to burn roots and affect plant growth.
Seven bogey fertilizer when avoiding drought. When the weather is dry and the soil moisture content is low, applying chemical fertilizer at this time will make the cytoplasmic solution of the root cells penetrate outward, causing the plant to be physiologically dry and die.
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