Symptoms: Before or during harvesting, the fruits of the first fruit branches are turned upside down and the fruits are directly exposed to the sunlight. The leaves often touch and even overlap, showing a cylindrical shape, and the diseased leaves have a leathery texture. Affect the fruit to enlarge, or cause sunburn.
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Incidence conditions: occur mostly in the wet and rainy season or after planting, except in the slow seedling period and the plants that have just slowed down. When the temperature is high or the field is short of water, the tomato has physiological curls.
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Control method:
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　　 (1) Drought-resistant exercise after planting.
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　　 (2) Formula fertilization method to ensure proper fertilizer supply and ensure sufficient soil moisture.
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　　 (3) Covering cultivation with a shade net.
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　　 (4) Do a good job in pruning in time.
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(5) Selection of resistant varieties.
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Source: Inner Mongolia Agriculture and Animal Husbandry Information Network
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