In the cultivation of tomato, there are many diseases that need to be prevented by vegetable farmers, and tomato virus disease is a relatively serious disease, and it is more common in tomato cultivation. Once tomato virus disease occurs, the benefits of tomato production will be reduced, especially in summer and autumn, so it is very important to control tomato virus disease. Then the next small series will introduce the symptoms of tomato virus disease and prevention measures.
First, the symptoms of tomato virus disease
1. Tomato field symptoms: The field symptoms of tomato are various, mainly including six types: mosaic type, stripe type and fern leaf type, giant bud type, leaf type, and yellow type.
2. Common symptom types: There are three types of symptoms of tomato virus disease: mosaic type, stripe type and fern leaf type. Among them, stripe virus has the greatest impact on yield, followed by fern leaf virus.
Second, the prevention and control measures of tomato virus disease
1. Selection of disease-resistant and disease-resistant varieties
The selection of disease-resistant varieties is the basic measure for the prevention and treatment of tomato virus diseases. At present, many varieties with strong disease resistance have been cultivated in China, and localities can be selected according to local conditions.
2. Seed treatment
Soak seeds with 10% trisodium phosphate solution for 20-30 minutes, then rinse with water and germination.
3. Strengthen cultivation management
(1) Sowing at the right time, cultivating strong seedlings: Strengthening management during the seedling stage, and cultivating the roots with sterility in 7-10 days before planting.
(2) Appropriate seedlings after planting to promote root development. Apply the base fertilizer, increase the application of phosphorus and potassium fertilizer, and carry out the root dressing to improve the disease resistance of the plant.
(3) Mosaic disease in the early stage of the disease with 1% calcium superphosphate or 1% potassium nitrate for root dressing, can reduce the incidence of disease, avoid water shortage and lack of fertilizer during the fruiting period.
(4) To avoid artificial transmission, when carrying out agricultural operations, it is necessary to remove the susceptible diseased seedlings and disinfect them with soapy water or 10% trisodium phosphate solution in time to avoid spreading the virus during seedling colonization and pruning. .
(5) Tomatoes should be deep-turned in autumn and winter. It is best to avoid continuous cropping with solanaceae vegetables, especially tomatoes.
4. Prevent the appearance of mites in the early stages of tomato growth
Aphids are the main pests that transmit tomato virus disease. In the hot and dry season, special attention should be paid to preventing cockroaches. The silver-gray membrane can be used for full-covering, and the reflection of the silver-gray membrane can be used to repel the aphids to reduce the possibility of aphids infecting the virus.
The above is the symptoms and prevention measures of tomato virus disease introduced to you by Xiaobian. I hope to bring some useful help to the growers and friends.
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Tea, as a famous health drink, is the contribution of the southern Chinese people to the Chinese food culture and the Chinese people's contribution to the world food culture
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