Bakanae disease prevention and control method
Rice bakanae disease is one of the major diseases of rice seedlings in Siping area. The pathogens overwinter on grains and rice straw. The next year, the seeds or straw that used the bacteria are used. The pathogens invade from the sprouts or wounds of the seedlings, causing the seedlings to become disease-prone. After the diseased seedlings were transplanted, the pathogens were brought to the field, causing the onset of rice seedlings.
First, the symptoms
Bakanae disease plants elongated during the internodes, grew thin and tall, plant color is light, rice stems produce white moldy material, and later turned pale red, sometimes black dots. The diseased plants had earlier heading, smaller panicles, and less grain or graininess. The dead plants had pale red or powdery mildew on the surface, and the inner and outer nymphs of the grain husks were closed and a mild red mold layer was born.
Second, prevention and control measures
1, do a good job of seed disinfection. Soaking with strong chlorine, rice amide and other liquids for seed disinfection, eliminate pathogenic bacteria on the seeds to reduce the chance of infection.
2, timely pull out the field disease. Pulling out the diseased plants in Putian, the bastard diseased plants can be clearly seen in Putian, its plants are taller and taller, one third to one half higher than normal seedlings, and when the diseased plants are found, they are timely unplugged to reduce field reinfection. .
3, sick straw to be buried or burned. Sick straw can not be thrown casually, nor can it be piled up on the side of the field. It can concentrate on high temperatures and be burned with fire.
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