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Second, avoid applying chlorine-containing fertilizer. Watermelon belongs to the avoidance of chlorine crops. The application of chlorine-containing fertilizers will affect the accumulation of sugar and make the taste of the melons lighter.
Three bogey excessive application of human excrement. Excessive human excrement can easily cause the plant to grow long, making it difficult to sit on the melon, and the melon skin is thick and tastes sour.
Four bogey soil layer fertilization. Watermelon top dressing should pay attention to deep application, and timely cover soil after application, especially nitrogen fertilizer. If applied, nitrogen is easy to volatilize to produce ammonia gas, which harms the leaves and reduces fertilizer efficiency.
Five bogey rainy weather fertilization. In the rainy weather, the air humidity is high, and the soil moisture content is high. At this time, fertilization is not only easy to lose the fertilizer, but also easily causes the watermelon to grow.
Six bogey fertilization sites are too close to the roots. The fertilization site of watermelon is generally about 10 cm away from the main root. It is too close to burn roots.
Seven bogey when the drought is topdressing. The weather is dry and the soil moisture content is low. At this time, the application of chemical fertilizer will cause the cytoplasmic solution of the root cells to penetrate outward, causing the plant to be physiologically dehydrated and die.
Watermelon fertilization seven bogey
One should not apply a large amount of nitrogen fertilizer. Watermelon fertilization is most concerned with the combination of nitrogen, phosphorus and potassium. If a large amount of nitrogen fertilizer is applied alone, the plant is very easy to grow, which is not conducive to flowering and melon development. Practice has shown that the nitrogen, phosphorus and potassium in the seedling stage should be 3.8:1:2.8, the extension period is 3.6:1:1.7, and the growth period of the melon is 3.5:1:4.6.
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