咋治番茄 physiological leaf curl
Physiological leaf curls often occur in the growing season of tomatoes. Most of the first fruit branches first occur. Sometimes the whole plant will suddenly develop. The leaves are curled, shrunk, tubular, and become brittle, causing the fruits to be directly exposed to sunlight, affecting fruit enlargement. . 1. For physiological leaf rolling disease, strong seedlings should be cultivated, and plots with high dryness and good drainage should be selected, and watering and topdressing should be rationally applied to make the plants grow robust and not long. Drain in time after the rain. After colonization, carry out drought-resistant exercise before fruit setting. 2, timely picking the right amount, moderate amount of pruning. Maintain a reasonable leaf area, not only to prevent prolonged, but also to prevent premature aging. At the right time, the foliar fertilizer was sprayed on the Wangchangzhi, forcing the toppings to vigorously return a large amount of nutrients, and the inertia advantage of the rushing tip quickly weakened to the topping situation. The main nutrient of the trunk turns to the young fruit development system, which enhances the fruit's swelling vitality, avoids the phenomenon of leaf hypertrophy, and improves the field permeability. 3. Strengthen the management of fertilizer and water, and regulate the temperature and humidity in the shed according to the growth and development of the tomato to avoid excessive drought. However, after the drought, it should avoid hydrating at noon at high temperature, so as to avoid the sudden drop of the ground temperature, the root system can not adapt to the water absorption and frustration, causing physiological drought and aggravating the leaf. In the young fruit period, the vegetable fruit Zingling is sprayed to enhance the water absorption and absorption of the tomato, increase the fruit yield and quality, reduce the fruit drop rate, and reduce the incidence of cracked fruit, stiff fruit and deformed fruit.
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