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1, the right amount. Eggplant requires the largest amount of nitrogen, but in the hot season, it is necessary to eat less. Urea should be controlled within 30 kg per acre. Because of the high temperature season, the conversion rate of urea after it is applied to the soil is relatively fast. After the plant meets the needs, the excess will be lost. Especially in sandy soils, the proportion of loss will be greater. It is preferred that the amount of ammonium bicarbonate applied per acre is not more than 40 kg. Excessive application rate will cause ammonia loss in eggplant leaves and fruits, in addition to nutrient loss.
2. Appropriate law. It is a habit for vegetable farmers to apply fertilizers, and it is a habit to use water, but this method should not be used in the summer high season. Because of the higher temperature, a large amount of ammonia vapor will be reduced after the chemical fertilizer is applied. In particular, ammonium bicarbonate is more likely to cause ammonia poisoning in eggplant. It is best to use ditching or burrowing. The thickness of the buried soil after top dressing should be no less than 5 cm to reduce the volatilization of the active ingredients of the fertilizer.
3. Reasonable matching. Although the eggplant needs the largest amount of nitrogen fertilizer, the phosphorus and potassium fertilizer is also indispensable. In the top dressing, it is not possible to apply nitrogen fertilizer every time. In the fruiting period, it is best to top up 2 times and the total should be no less than 40 kg to meet the needs of the eggplant and the results.
2. Appropriate law. It is a habit for vegetable farmers to apply fertilizers, and it is a habit to use water, but this method should not be used in the summer high season. Because of the higher temperature, a large amount of ammonia vapor will be reduced after the chemical fertilizer is applied. In particular, ammonium bicarbonate is more likely to cause ammonia poisoning in eggplant. It is best to use ditching or burrowing. The thickness of the buried soil after top dressing should be no less than 5 cm to reduce the volatilization of the active ingredients of the fertilizer.
3. Reasonable matching. Although the eggplant needs the largest amount of nitrogen fertilizer, the phosphorus and potassium fertilizer is also indispensable. In the top dressing, it is not possible to apply nitrogen fertilizer every time. In the fruiting period, it is best to top up 2 times and the total should be no less than 40 kg to meet the needs of the eggplant and the results.
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