Poor coloring of deep winter tomatoes

When the incubation temperature is increased from 18 °C to 26 °C, the coloration of tomato is better. When the temperature is higher than 32 °C, the formation of lycopene is affected by coloring. When it is lower than 12 °C, it can not be colored normally.

Scientific fill light in the deep winter, grasshoppers should be uncovered as early as possible to extend the tomato's light time. After the snow in the snowy weather, the grasshoppers should be uncovered under the premise of ensuring that the temperature in the shed does not decrease, so that the vegetables are more visible. In addition, the dust on the shed film should be wiped in time, and the photosynthetic nutrient film fertilizer should be sprayed. When the tomato is about to mature, the leaves around the fruit and the lower part can be removed, and the diseased leaves should be removed in time to promote the normal coloration of the fruit.

Timely application of potassium, boron fertilizer and potassium fertilizer is conducive to tomato coloring, but should be applied in advance. Because the effect of potassium fertilizer is slow after application, if it is applied in the tomato coloring period, it will not get the proper effect. In the flowering period, the young fruit period and the expansion period, the fruit juice Zingling is sprayed in time to enhance the quality of pollen fertilization, and the cycle fruit set rate is strong, which promotes fruit development.

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