Rice smut, also known as powdery mildew and harvested fruit, is mostly susceptible to heading and poplar stages in rice, resulting in panicle disease, which generally has little effect on yield. However, in recent years, due to unreasonable fertilization by some growers, etc., Some of the plots are heavier, with a severe incidence of more than 60%. There are 1-5 grains per panicle and up to 20-30 grains per panicle, which can also cause significant losses.
Prevention:
1, choose anti-disease products.
2, to avoid seeding in the sick field, burn the disease out of the valley as soon as possible to prevent spread of germs.
3, the selection of disease-free seed valley; the implementation of seed valley disinfection, when the temperature is below 20 °C, the use of 1% copper sulfate solution soaked for 1-2 hours, or 2% formalin soaking for 2-3 hours.
4. In combination with the control of sheath blight, 5% Jinggangmycin Pesticide 500 accompaniment spray was used to prevent and control rice sheath blight at the end of the booting period to 15% and 85% at the time of heading.
5, to strengthen the cultivation and management, pay attention to the application of phosphorus and potassium fertilizer, to prevent late application, partial nitrogen fertilizer; reasonable irrigation, enhance rice viability, to prevent lodging to reduce the incidence. Http://
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