Due to the fact that the temperature cannot reach the requirement of lycopene formation, the tomato can not turn red again. The use of the medicament on the strain to promote red is an effective measure to promote the early listing of tomatoes. However, in the actual process of reddening, the growth of the plants is often inhibited due to improper handling, and some phenomena of phytotoxicity occur. Therefore, the use of pharmaceutical red reminder should pay attention to the following matters: It is not too early to remind others of redness. It is generally required that the Fruit be fully grown and the red color effect is best when the fruit color changes from white to fried rice. If the fruit is still in the mature period, not fully grown up, eager to remind red, prone to uneven coloration of the phenomenon of stagnation. 2. The concentration of the red chemical should not be too high. Most tomato reds use 40% ethephon, and the common concentration is 50 milliliters of ethephon plus 4 kilograms of water. Mix well and use. If the concentration of the liquid is too high, the leaves of the plant's base will be damaged, causing the leaves to yellow and produce obvious symptoms of drug damage. 3. The amount of red fruit should not be one most time. The red fruit per plant is generally 1 to 2 at a time. Because a single plant reminds red fruit too much, the dose is too large, and it is easy to produce phytotoxicity. 4. Prompt red liquid should not contaminate the leaves. Otherwise, the leaves will fall yellow. The specific method of redness is: use a small piece of sponge to dip the liquid to smear the surface of the fruit; you can also use a cotton glove to dip the liquid and apply it to the surface of the fruit.
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