The tomato coloring was better when the holding temperature was between 18°C ​​and 26°C. When it was higher than 32°C, the formation of lycopene was hindered from affecting coloration. When it was below 12°C, it could not be normalized.
Science fills the light in the deep winter, and the grass cover should be covered as early as possible to extend the tomato's light exposure time. After snow stopped in cloudy snow weather, under the premise of ensuring that the temperature in the shed does not decrease, weeds should be uncovered to make vegetables more visible. In addition, the dust on the film should be wiped in time, and the photosynthetic nutrient film fertilizer should be applied. When the tomato is about to mature, the leaves around and below the fruit can be removed, and the diseased leaves must be removed in time to promote the normal coloring of the fruit.
The timely application of potassium and boron potassium fertilizer is beneficial to the coloration of tomatoes, but should be given in advance. Because of the slow effect of potassium fertilizer after application, if the tomato coloring period is supplemented, it will often not obtain the desired effect. In the flowering, young fruit period, the expansion of the timely spraying fruit Zhuang Ti Ling, enhance the quality of pollen fertilization, cycling fruit set rate, promote fruit development.
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