Under the high temperature of the sun, the transpiration of the plant is high, especially the leaves and fruits. Under strong direct light, the temperature of the leaf and fruit surface is very high, if the water is not replenished in time, it will directly lead to daily burning for melon leaves, that is, the leaves turn green and white, and then wither yellow; For nightshade vegetables, the leaf margins will shrink and die; On the fruit surface, it will directly show the situation of sunburn, that is, the sunny side appears yellowish-white, and the severe dry white thin skin is thin.
Although melon vegetables like high temperature due to poor flower bud differentiation, too high temperature will affect the differentiation of flower buds, resulting in an increase in male flowers and a decrease in female flowers in melon vegetables, while nightshade vegetables will lead to flower bud differentiation deformity at high temperature, resulting in small flowers, small fruits, and even falling flowers and fruits.
The reduced yield exacerbates respiration and consumes a lot of nutrients, resulting in low yields. High temperature will not only inhibit the continuation of photosynthesis and reduce the synthesis of organic nutrients, but also accelerate respiration, decompose and consume a large amount of organic nutrients, and eventually make flower buds and young fruits not get enough nutrients and appear deformed, hollow and even withered. In the case that Huaguo couldn't sit still, it was even more aggravated.
Poor fruit color change affects pigment formation, which is not conducive to fruit color change. When the fruit of nightshade vegetables such as tomatoes and bell peppers turns color, the lycopene inside the fruit can be quickly produced at about 24°C, and the fruit color change quickly and smoothly at this temperature. Once the temperature exceeds 30°C or reaches above 35°C, the production of lycopene will be severely hindered, and even if some have begun to turn color, the fruit will appear yellowish-white.
Virus disease shows that vegetables are infected with viral diseases, and generally do not show a dominant state when the temperature is strong, and once there is a high temperature and other adversity, the growth of the originally strong plants is inhibited, and the virus disease will show a dominant state, and then the plants show various symptoms such as mosaic leaves, fern leaves, striped spots, etc., once the obvious symptoms appear, it is irreversible.
The temperature rises and the "five abnormalities" of vegetables need to be carefully prevented are introduced here, I hope it will help you. If you want to buy high-quality and high-yield vegetable seeds, you can download the seed bank App, and the country's excellent vegetable varieties are available for everyone to choose.
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