1. Determine the type of nutrients based on the growth of the tomatoes. Generally speaking, in the early stage, the plant growth is relatively strong, and it is easy to grow. It is necessary to use foliar nutrients that promote stem and leaf growth, and potassium dihydrogen phosphate or compound fertilizer can be used. As a result, the plant growth potential began to weaken at the peak, and the leaf nutrients that promote the growth of stems and leaves should be used to promote the leaves, and urea and sugar can be used.
2. Determine the type of nutrients based on weather conditions. In the rainy day, the lack of light in the greenhouse and the poor photosynthesis make the supply of sugar in the two red persimmons insufficient. At this time, the effect of spraying sugar on the leaves is better.
3. Spray the calcium fertilizer in time. The growth of tomato fruit requires more calcium. When the soil is insufficient for calcium, the fruit is prone to umbilical rot. Therefore, calcium chloride, superphosphate, and calcium supplement should be sprayed during the fruiting period of the two red persimmons to meet the needs of tomatoes for calcium.
4. The interval between fertilization of tomato leaves should be appropriate. The appropriate interval for fertilization of tomato leaves is 5-7 days. Spraying inorganic fertilizer on the foliage is easy to produce fertilizer, so the interval should be longer, generally not shorter than 7 days.
5. Tomato leaf fertilization should be combined with disease prevention. Foliar fertilization in winter and spring seasons often causes a significant increase in the humidity of the air in the protected area, which is likely to cause tomato diseases. Therefore, the number of times of spraying fertilizer on the leaf surface of the cloudy day is less. When applying fertilizer, it is necessary to add protective fungicides such as Antaisheng and DuPont Yibao, and to ventilate for a short time after fertilization to reduce the incidence rate.
6. Apply Foliar Fertilizer to the right amount. When the injured leaves occur, rinse off the excess fertilizer with water and increase the water content of the leaves to alleviate the damage of the leaves. When the soil water content is insufficient, watering is needed to increase the water content in the plant and reduce the concentration of fertilizer in the stems and leaves.
2. Determine the type of nutrients based on weather conditions. In the rainy day, the lack of light in the greenhouse and the poor photosynthesis make the supply of sugar in the two red persimmons insufficient. At this time, the effect of spraying sugar on the leaves is better.
3. Spray the calcium fertilizer in time. The growth of tomato fruit requires more calcium. When the soil is insufficient for calcium, the fruit is prone to umbilical rot. Therefore, calcium chloride, superphosphate, and calcium supplement should be sprayed during the fruiting period of the two red persimmons to meet the needs of tomatoes for calcium.
4. The interval between fertilization of tomato leaves should be appropriate. The appropriate interval for fertilization of tomato leaves is 5-7 days. Spraying inorganic fertilizer on the foliage is easy to produce fertilizer, so the interval should be longer, generally not shorter than 7 days.
5. Tomato leaf fertilization should be combined with disease prevention. Foliar fertilization in winter and spring seasons often causes a significant increase in the humidity of the air in the protected area, which is likely to cause tomato diseases. Therefore, the number of times of spraying fertilizer on the leaf surface of the cloudy day is less. When applying fertilizer, it is necessary to add protective fungicides such as Antaisheng and DuPont Yibao, and to ventilate for a short time after fertilization to reduce the incidence rate.
6. Apply Foliar Fertilizer to the right amount. When the injured leaves occur, rinse off the excess fertilizer with water and increase the water content of the leaves to alleviate the damage of the leaves. When the soil water content is insufficient, watering is needed to increase the water content in the plant and reduce the concentration of fertilizer in the stems and leaves.
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Amino Acid,Vegetal Amino Acid,Foliar Fertilizer
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