Flower face affects beauty, affects quality how to control tomato flower face disease

Tomato "flower face" disease affects appearance, sound quality, yield and benefit. The causes and prevention methods of tomato "flower face" disease are as follows.

Tomato flower face disease

1. Choose a variety. Tomato "flower face" is related to tomato varieties. The resistance of all kinds of tomato varieties is different, so try to choose the tomato varieties with low "flower face" rate when cultivating.

two。 adequate manuring. High nitrogen, deficiency of phosphorus and potassium and lack of boron can easily cause mosaic disease. First, excessive vegetative growth, the increase of chlorophyll, inhibit the formation of lycopene, resulting in a large number of macula on the tomato fruit surface. Second, lack of boron and potassium, poor transport of nutrients, necrosis and browning of tomatoes due to lack of nutrition. Third, in the middle and later stage of tomato growth, the plant shows premature senescence, which is easy to cause unripe tomato in the process of red because of insufficient nutrition supply, less lycopene formation, large macula and green stripe. It is suggested that vegetable farmers should use organic fertilizer as the main fertilizer and mix all kinds of nutrient elements reasonably.

3. Temperature adjustment. The data showed that the temperature of tomato fruit surface exceeded 32 ℃, which was not conducive to lycopene synthesis in tomato, resulting in green or brown tomato skin. When the temperature is lower than 8 ℃, the formation of lycopene will also be disturbed and destroyed, and then the appropriate temperature will not turn red. In addition, the night temperature is too high and the respiratory intensity is high, which is not conducive to the accumulation of nutrients, which is characterized by tomato hypoplasia. Therefore, during the development period of tomato, the temperature should be suitable, the daytime temperature should be controlled at 25 ℃-30 ℃, and the night temperature should be controlled at 13 ℃-17 ℃.

4. Light, moisture. Light and water affect photosynthesis and transpiration of tomato. Too strong or too weak light will affect the discoloration of tomatoes. When the soil is dry and the plant transpiration is large, the root supply of nutrients and water is insufficient, and the color conversion of tomato will be poor. Vegetable farmers can improve the ventilation and light transmittance of tomato plants by pruning and branching, but in high temperatures, do not let the sun shine directly on the tomatoes, pay attention to preserving a leaf above the tomatoes. Watering to see the dry and wet for the degree, to avoid retting the root, root injury.