Recently, the city's agro-technical experts proposed that the prevention and control of rice blast should follow the plant protection policy of “prevention-oriented, comprehensive prevention and control†for the climate characteristics of this year and the growth of rice.
Agricultural Water and Fertilizer Management: Using shallow water intermittent irrigation technology to prevent deep-water flooding, to top-dressing, to ensure that nitrogen fertilizer is not excessive, potassium sulfate 2~3kg per mu, to enhance rice resistance, can also be sprayed with potassium dihydrogen sulfate, etc. During the peak period of rice delivery, the plants, such as greed greens, must drain the fields in time. Weeding in Paddy Fields: In the case of plots where weeds were not completely weeded and dry after weeding, secondary weeding was performed and weeds were removed to increase ventilation, light transmission, and rice resistance.
Chemical control and prevention shall pay special attention to spray protection of susceptible varieties and paddy fields in susceptible stages. The application of pesticides should be controlled early in the onset of leaf blast, and the surrounding rice or rice fields should be protected by pesticides, but the focus of pesticide application should be To prevent the occurrence of disease-causing panicle blasts and branches, apply the pesticide once at the end of booting stage, heading stage, and heading stage. If the climatic conditions favor the formation and infestation of pathogens, apply them again at the filling stage.
The recommended agent is 75% tricyclazole WP, 20g per mu; or 40% of Fuji No.1 EC 130ml per mu; or 25% of 100g (cicanthamine) EC, 100ml per mu; or Bacillus subtilis Bacillus powder 15g per mu, spray evenly. For the more common land masses, one should select one that has a good therapeutic effect such as 100 g or Fuji No. 1.
First, the amount of water should be sufficient in order to spray evenly and thoughtfully; the second is to spray dry spray, in order to prevent and cure, should be based on weather forecast, seize the opportunity to grab a sunny spray; Third, spraying should be timely and thoughtful, regardless of Ye Yan, The panicles and necks should be treated as soon as possible.
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