Due to the large amount of precipitation in the previous period, part of the paddy fields were flooded, coupled with high temperature and high humidity, rice (mid season) rice after flooding was prone to rice-based rot. Attention should be paid to prevention and control.
Rice based rot is a bacterial disease that mainly affects the root and stem bases of rice. It usually occurs from rice tillering to heading and grain filling. Severe diseased planting leaves of the diseased heart firstly roll green, then withered yellow, resembling the "dry heart" caused by scorpion damage; from booting to filling stage, the leaves of the diseased plant first lose water and blight, and then form "birth and booting spikes" or "white spikes". Its unique symptom is that the root of the diseased plant turns brown or dark brown and has bad odor.
Low-lying land, heavy soil, poor drainage, poor ventilation, heavy weight of the plots; nitrogen fertilizer, late application, seedling tenderness; incidence of hybrid rice, high-quality rice is more serious. High temperature and humidity are conducive to the onset and epidemic.
Current prevention and control measures:
The first is to strengthen fertilizer and water management. Appropriate application of potash fertilizer to avoid partial application and delayed application of nitrogen fertilizer; to achieve shallow irrigation in the shallow water during the tillering period, often exposed field, moderate field drying at the end of the tillering period, and to keep dry and wet during the late period, to prevent long-term deep irrigation or dehydration drought.
The second is to conduct chemical control. The rice-based rot is mainly prevention, and the application effect is good before the onset of rice, otherwise it will affect the effect. In the 7 to 10 days before transplanting rice, tillering stage, early stage of heading, the effects were significant. The agent is sprayed with 3% of endotolycin 1000 times, or 50% of thiobacillin (chlorobromoisocyanuric acid) 40g/mu (or 72% of agricultural streptomycin 15g/mu) spray 60kg of water, spray When the medicine is best, there is no water in the field.
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