Causes and control of tomato flower face

Many farmers currently respond to yellow-green patches in tomato fruits. After scientific and technical personnel to see the field, the stems and leaves of the tomatoes grow normally, but the fruit is poorly colored. This is also called the flower face.

Reasons for the formation: First, it is related to the variety, and some varieties have a high probability of having a face, and some have a small chance. Second, it is related to improper cultivation and management. When the application of nitrogen fertilizer is excessive, the concentration of the soil solution is too high, resulting in an imbalance in pH. If the vegetative growth is excessive, the chlorophyll content of the fruit increases, inhibiting the formation of lycopene, resulting in a large number of macula on the tomato fruit surface. Lack of boron and potassium, resulting in poor nutrient transport, necrosis and browning due to lack of nutrition in the fruit, the appearance of flowering fruit. The third is related to temperature. When the tomato fruit surface temperature is lower than 8 ° C or higher than 32 ° C, it is not conducive to the production of lycopene, especially because the night temperature is too high, which is not conducive to the accumulation of nutrients, resulting in poor fruit development and easy to produce flower fruit.

Precautionary measures: First of all, pay attention to the selection of excellent varieties, and reduce the chance of flowering fruits from the internal factors and sources of the varieties. Secondly, the base fertilizer is mainly based on fully fermented fermented organic fertilizer. When the fruit enters the expansion period, it can add 10 kg of ternary compound fertilizer per mu to promote fruit expansion. Finally, during the fruit development period, the temperature of the greenhouse is controlled. During the daytime, it is between 25 °C and 30 °C, and the night temperature is between 13 °C and 17 °C. Watering is used to see the wetness and the roots are prevented.