Tomato color change refers to the process that the fruit turns from green to red and gradually matures. In the color change stage of tomato fruit, if the management operation is improper, it is easy to make the tomato fruit form a "flower face". The temperature regulation in the wintering shed is unscientific and the management method is not appropriate, which can easily lead to uneven tomato coloring.
In order to make the tomato color and high in commodity quality, the following three points must be paid attention to in the management of sheds:
Rational fertilization of base fertilizer is mainly based on organic fertilizer, and various nutrients are reasonably matched. When applying potassium fertilizer to promote the expansion and coloration of tomato fruit, it needs to be used before the color change period. This is because it takes a certain time for the potassium fertilizer to be absorbed and utilized by the plant after being applied to the soil. Potassium fertilizer should be applied with base fertilizer or initial application. After the fruit turns red, the application of potassium fertilizer can not achieve the expected effect.
Temperature regulation Tomato fruit development period should be controlled during the daytime temperature of 25 ° C ~ 30 ° C, night temperature of 13 ° C ~ 17 ° C.
Avoid excessive leafy over the middle and late stages of tomato is conducive to fruit coloring, but should not be overdone. In the color-changing period, the leaves should be removed from the old leaves and yellow leaves of the diseased leaves and the lower leaves of the plants, and the leaves that are shaded around the fruit should not be completely removed from the leaves of the red fruits, so as to avoid the decrease of photosynthetic accumulation of the plants. Affect the expansion of the fruit.
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