Techniques for preventing physiological Diseases of Autumn Tomato
1. Prevention of navel rot: fertilizers should be reasonably matched with nitrogen, phosphorus, potassium and trace elements, and applied at acupoints. Control the application of nitrogen fertilizer, reasonable watering, keep the soil moist. 2. prevention of sunburn: increase the application of organic fertilizer, improve the ability of soil fertilizer and water conservation, and leave 3 leaves on the top inflorescence when picking heart leaves, so as to cover the fruit and reduce sunburn. 3. Anti-cracking fruit: frequently watering, draining after wetting the border machine, keeping the soil moist, timely pruning and hiding the ear between the branches and leaves, preventing the fruit from direct sunlight. 4. Anti-abnormal fruit: the correct use of growth regulators, the use of 2.4 Mel D concentration not more than 30 mg / kg, tomato Ling concentration not more than 40 mg / kg. Control the amount of nitrogen fertilizer, with phosphorus and potassium fertilizer, increase the application of boron fertilizer, keep the soil moist, but dry, but wet.
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Techniques of organic ecotype soilless cultivation of tomato
High-yielding cultivation of small tomatoes-1. requirements for environmental conditions-small tomatoes have the characteristics of temperature, light, fertilizer tolerance and semi-drought tolerance. In the spring and autumn climate, when the climate is warm, the light is strong and there is little rain, the cultivation yield is also high. -1. Temperature requirements: seed germination temperature 28-30 ℃, minimum germination temperature 12 ℃, seedlings suitable for daytime.
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The effect of early control of autumn tomato diseases and insect pests is good: leaf mildew
Early blight: after the onset of the disease, there are concentric wheel striated disease spots on the leaf surface, dark brown, watery. Before and after the attack, 70% mancozeb wettable powder 500 times diluent, or 75% chlorothalonil wettable powder 400 times diluent spray, once every 7 days, 3 times continuously for 4 times.
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