What about strawberry virus disease? Strawberry virus disease prevention and treatment method

Strawberry is a common fruit, sweet and delicious, rich in nutrients, and loved by people. Strawberry virus disease is a common disease, which will lead to severe reduction of strawberry production. The following is a small series to introduce the prevention and treatment of strawberry virus disease.

Symptoms of strawberry virus disease

Common strawberry virus diseases mainly have the following five symptoms: (1) mottled type: the leaves are irregularly green and yellow, showing mottled. (2) Brown edge type: the edge of the blade is yellowish brown. (3) Type of dead spot: There are necrotic spots on the leaves, and the dead spots are irregularly round. (4) Pulse dark type: In the seedling stage, the frontal veins of the leaves are black, and the opposite veins of the leaves are yellowish brown. (5) Shrinkage type: the leaves are shrunk, the leaves are not flat or spoon-shaped. Most of the one strain, one disease and one disease. When the summer temperature is high, the diseased plant is short, the symptoms are not obvious or disappear, but the yield and quality are significantly reduced.

Key Techniques for Prevention and Control of Strawberry Virus Disease

1 selection of resistant varieties

Different varieties of strawberry have different disease resistance to viral diseases. In order to reduce the occurrence of viral diseases or slow down the damage during cultivation, the varieties with strong resistance to viral diseases should be cultivated. Japan No. 99, the United States No. 3, the female peak, the contest, the incense is a species that is more resistant to viral diseases.

2 Adding organic fertilizer and strengthening the management of middle cultivating

The high and low soil fertility directly affects whether the growth of strawberry plants is robust. Therefore, whether it is open field or facility cultivation, organic fertilizer should be applied to provide a better growth environment for strawberry plants. At the same time, we should strengthen the cultivating and weeding in a timely manner, timely eliminate cockroaches, and reduce the transmission route of strawberry virus disease.

3 detoxification treatment of seedlings

In the development of agricultural science and technology, seedling detoxification technology has become a major and key technical link in the prevention and control of viral diseases. The seedlings of detoxification biochemical group are used to cultivate seedlings, and the virus-free seedlings are cultivated and cultivated. It played an irreplaceable role.

4 control of infection routes

Aphids are important infectious vectors for strawberry virus disease. The cultivation techniques of thick-skinned melons in greenhouses should pay attention to the control of aphids. First of all, the use of aphid evasiveness, set up the anti-mite yellow plate to attract cockroaches, silver ash film to avoid cockroaches, can play a better control effect. Planting after transplanting in autumn, in addition to appropriate late broadcast to avoid the flight period of locusts, in addition, in the seedlings should be timely annihilation, cockroach, cockroach. Strengthening the insect-proof net configuration of the strawberry shed in the facility is the most effective way to block the transmission of the drug. Before the transplanting of strawberry seedlings, the seedlings were irrigated with 25% Aketai water-dispersed granules, which would last for more than 30 days to prevent aphids and whitefly. It is a good method to prevent aphids from reducing the transmission of poison. 2-3 days before transplanting, seedlings were sprayed with 25% Aketai water-dispersible granules 1500-2000 times, and the liquid penetrated into the soil in addition to the sprayed leaves. Spraying about 2 kilograms per square meter of seedbed. It has a good effect on controlling aphids and preventing viral diseases.

5 chemicals to control strawberry virus disease

Use 25% Aketai water to disperse granules 2500-5000 times solution, or use 10% imidacloprid WP 1000 times solution, or 10% anti-butadiene WP 1000 times solution, or 2.5% green Kungfu water 1500 times liquid, or 1.5% of phytopathogenic emulsifiable concentrate 1000 times solution, or 30% of viral star wettable powder 500 times solution for spraying, has certain control effect on strawberry virus disease.