What kind of medicine should be used for the disease of baked fireworks?

The leaf disease of flue-cured fireworks was sprayed with antiviral agents such as 600,700fold solution, 500fold solution of Dongwang virus, 500fold solution of virus special or 500fold solution of Ⅱ, etc. You can also use 400 times of 22% Jinyebao wettable powder, 1.5% of virus Ling emulsion 500 times and 250 grams of zinc sulfate. In addition, you should also know the symptoms and control methods of flue-cured tobacco mosaic disease.

Symptoms and control methods of flue-cured fireworks leaf disease

(1) symptoms of baked fireworks leaf disease

1. The leaf veins and adjacent mesophyll tissues became lighter in color. It's translucent. From the perspective of the light, it can be seen that the veins of the diseased leaves are very clear, starting from the base of the leaves, extending to the tip, and gradually spreading to the whole leaf. A few days later, the color of the leaves is uneven, forming a yellow-green "mottle or mosaic."

two。 The leaves become uneven in thickness when they are seriously ill. Form bubble spot, leaf edge gradually form notch and curl downward, wrinkle and twist, some leaves even become ribbon. All kinds of deformities.

3. In the early stage, the susceptible plants were dwarfed, the internodes shortened, did not grow, grew very slowly, the leaves did not open, and most of them could blossom and bear fruit normally, but the fruit seeds were poorly developed.

(2) Prevention and treatment of baked fireworks leaf disease

1. The roots were irrigated with 10-15 kg urea mixed with water and broken film. Because once the mosaic disease occurs, the tobacco root system does not develop; but we should pay attention to the land fertility, grasp the amount of use, the amount of tobacco is not easy to yellowing, not conducive to picking and curing.

two。 Use virus Bike liquid 1000 times + agricultural streptomycin 1000 times liquid spray, then spray with poison elimination liquid 600x, and finally spray linnanmycin 1000 times liquid, the interval time can not be too long, all procedures must be completed within 2 hours; do it again after 5-7 days. Generally speaking, twice is fine.

3. The nursery bed should be far away from villages, roasting houses, vegetable gardens and other poison source bases, the water source should be clean and should not be polluted by disease and disability. Centralized and commercial breeding should be adopted to raise seedlings.

4. Do a good job in pastoral hygiene and prevent and control man-made diseases. Before the first ploughing, the infected tobacco plants and weeds should be cleared out of the tobacco field in time, and do not repeatedly communicate and touch between diseased plants and healthy plants.

The most suitable temperature for mosaic disease is 28-30 ℃. Sudden hot and dry wind or cold rain will cause the disease, so prevention must be done before this.