What is annual plant rice evil seedling disease? How did it happen? What kind of medicine can be cured?

Rice is one of the most common cash crops in China, which is planted in almost every family, but with the change of environment and external factors, rice is infected with various diseases, and rice evil seedling disease is the most common one. What is rice evil seedling disease? How did it happen? What kind of medicine can be cured?

Rice evil seedling disease, also known as male seedlings, can occur from seedling stage to heading stage. The pathogen of evil seedling is parasitic or attached to the seed, and the seed carrying bacteria is the main cause of the disease. Seriously diseased seeds often fail to germinate, or seedlings can die soon after germination. The diseased seedlings of mildly diseased seeds grew only long, which was 1 inch higher than that of healthy plants, the plant was thin, the whole plant was yellowish green, the root system was poorly developed, and some diseased seedlings died before and after transplanting.

In the adult stage, diseased plants generally appear about one month after transplanting, and the disease symptoms are similar to those in the seedling stage, with few or no tillers, significant elongation of internodes, many inverted adventitious roots on the lower stem nodes, and white mildew in the rice stalk, and then turn into reddish, sometimes black dots. After heading, the opening angle of flag leaves of diseased plants was larger than that of normal plants. The serious disease withered and died at the booting stage, the light disease often heading early, the spike shape was short and the grain was unfruitful. When the weather is wet, reddish or white mildew grows on the leaf sheaths of dead plants. There is a reddish mildew layer at the suture of the inner and outer glumes of the diseased grain husk.

What kind of medicine should I use? How to prevent and cure it?

1. Seeds should be strictly disinfected

Soak the seeds with 50% carbendazim 100 grams, add 50 kilograms of water; or 35% carbendazim 120 grams, soak the seeds in 50 kilograms of water 40 kilograms; or 25% Shibaoke, 25 percent make 100 grams, 25 percent carbendazim are the same kind of medicament, soak the rice seeds in 10 milliliters and 50 kilograms of water respectively, and soak the seeds for not less than 48 hours. It must be noted that the liquid level must be 15-20 cm higher than the seed level for seed absorption. At the same time, in the process of seed soaking, the liquid level of the drug remains static, and it can not be stirred or reused to ensure that the bacteria are suffocated.

Second, to establish disease-free farming.

To stay in the field, you should choose the field that is disease-free or lightly affected, and harvest it on a single basis.

Third, diseased plants should be removed in time

Whether in the seedling field or in the field, diseased plants should be pulled out in time to prevent the expansion of infection.

Fourth, the treatment of diseased plant rice straw

Properly handle diseased straw, do not throw it casually, can not be piled on the edge of the field, can not be used as seed germination mulch, can not be used to bind seedling handle, can concentrate high temperature pile and burn with fire seriously.