Shouguang City, Shandong Province, a vegetable farmer asked: tomatoes do not change color, what should I do?
Wang Yanyi: The main reasons for this phenomenon are as follows: First, the temperature is high and the light is strong, which affects the turning of tomato fruits. During this time, temperature and light conditions are the main factors restricting the coloration of tomatoes. Increase the amount of ventilation, cover the shade net outside the shed, according to the temperature and weather changes in time to cover, to avoid the glare, high temperature. Second, there is insufficient supply of nutrients. The late management could not keep up, the soil was too dry, and the supply of nutrients was insufficient, which was the second reason that affected the transformation of tomatoes. A reasonable supply of fertilizer and water, strengthening the maintenance of the upper and middle leaves, to ensure the normal supply of nutrients, can ensure the formation of tomato lycopene, ensure normal color conversion.
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