Rice virus disease is the most common disease in our county in recent years, especially in the late season. The main symptoms are: dwarf disease, increased tillering, dark green leaves, short and stiff leaves, early onset of head failure, early onset of small ear damage, numerous pods, late seedlings mainly from seedlings, severe onset of tillering after transplanting . This disease is caused by the damage of the black and green leafhoppers, the two-tailed leafhoppers, and the leafhoppers on the diseased plants. This year, it continued to rain in late June and was exposed to high temperature and drought in the middle and early July. The growth of seedlings is fragile, which is beneficial to the occurrence of leafhoppers, and it is easy to cause the epidemic of viral diseases. Therefore, prevention and control should be emphasized.
Prevention:
(1) Strengthen the control of leafhoppers in the seedling stage and tillering stage, and the pesticides can be selected from the group consisting of buprofezin, imidacloprid, and acetamiprid.
(2) In the early stage of disease, sporadic disease strains should be removed in a timely manner. Special transplanting should be performed to remove diseased plants, and nitrogen, phosphorus, potassium, lime, and arboreal ash should be used to promote growth and prevent the spread.
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