Method for preventing and treating tomato early blight

Abstract

The invention belongs to the technical field of tomato pest and disease prevention and control, and particularly relates to a method for preventing and treating a tomato early blight. The method comprises the following steps of adjusting a temperature and humidity of a seedbed, and separating seedlings when the seedlings grow to a state with two leaves and one heart; performing high ridge cultivation, rationally fertilizing, timely sealing a ridge after field planting and seedling slowing to promote the occurrence of new roots, controlling the temperature and humidity in a greenhouse, strengthening the ventilation and light transmission management, when tomato early blight characteristics occur, spraying tomatoes with 5% chlorothalonil dust through a prevention and control device of agricultural and forestry pests and diseases, spraying a 1 kg of dust per acre, spraying once every seven days, in a fruiting period, regularly removing lower diseased leaves, and burying or burning to reduce the chance of disease transmission; the method is suitable for prevention and treatment of the early blight of large areas of the tomatoes, and has a good prevention and treatment effect.

Description

technical field [0001] The invention belongs to the technical field of tomato pest control, in particular to a method for preventing tomato early blight. Background technique [0002] Tomato early blight occurs in Northeast my country, North China, East China, Southwest China and other regions. Its main feature is that there are obvious ring patterns on the disease spots on fruits, leaves or main stems, so it is also called ring striaeosis. Fruit lesions are often near the fruit pedicle, stem lesions are often at the branch, and leaf lesions occur on the mesophyll. Early blight has seriously affected the yield and quality of tomatoes. Nowadays, people usually use spraying powder to prevent early blight of tomatoes, but the existing dusters usually cannot spray the powder evenly on all parts of the tomato, which makes the control effect unsatisfactory. At the same time, the existing duster cannot guarantee that the medicinal powder does not agglomerate, so that the medicinal...

AI Technical Summary

Problems solved by technology

Early blight has seriously affected the yield and quality of tomatoes. Nowadays, people usually use spraying powder to prevent early blight of tomatoes, but the existing dusters usually cannot spray the powder evenly on all parts of the tomato, which makes the control effect unsatisfactory. At the same time, the existing powder sprayer cannot guarantee that the powder does not agglomerate, which makes the spraying of the powder on the tomato uneven, and then causes too much pesticide residue in some areas on the tomato, and the control effect of some areas is not ideal due to too little powder sprayed.

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