1. Tomato redness should not be too early. The fruit is not growing enough. After the young fruit is immersed in ethephon, the color is not good. It is easy to cause the tomato to appear beige, sometimes the skin is reddish, but the interior is still green, the pulp is less, stiff, and the quality is degraded. It is generally required that the tomato fruit grows up sufficiently, and when it turns from white to beige, the red coloring effect is good.

2, tomato reddish the concentration of the drug should not be too high. Tomato reddish mainly uses 40% ethephon, 4 kg per 50 ml of ethephon water, fully mixed and used. The concentration of the drug solution is too high, and the symptoms of the drug damage are damage to the leaves at the base of the plant, and the symptoms are obvious.

3, the number of red fruits per plant tomato should not be too much. It is better to take 1-2 each time, because the single plant has too many red fruits, and the amount of drug is too large, which is easy to cause phytotoxicity.

4, tomato reddish liquid should not contaminate the leaves. When the liquid is contaminated with the leaves, it is easy to cause yellowing and falling. The correct way is: cut a small sponge, dip the liquid, and apply the surface of the fruit.

5, tomato red temperature and humidity must be strictly controlled. Low temperature is not conducive to tomato coloring. Humidity is too easy to cause rot and the relative humidity of air is 80-85%.