Control technology of tomato physiological leaf rolling
Symptoms of the disease: Before or during harvesting, the first fruit branches are slightly coiled, or the leaves of the whole fruit are simple and brittle, causing the fruits to be directly exposed to sunlight, affecting fruit enlargement or causing sunburn. This disease sometimes happens suddenly.
The law of incidence: mainly related to soil, irrigation and management. When the temperature is high or the field is short of water, the tomato closes the stomata, causing the leaves to gather or curl and appear physiologically curled.
Prevention and treatment: (1) Drought-resistant exercise after planting. (2) Formula fertilization method to ensure proper fertilizer supply and timely, to ensure sufficient water in the upper soil. (3) Covering cultivation with idle shade nets (4) Doing pruning in time. (5) Select resistant varieties, such as Zaofeng, etc., while Beijing No. 10 and early Kui leaf are heavy. (6) Proper use of plant hormones. (7) Control the mites in time.
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