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Disease prevention and control should implement the "prevention-based, comprehensive prevention and control" approach to plant protection.
1 Strengthen the quarantine of plants to prevent the spread of pathogens with seeds, seedlings, and packaging materials from disease areas to disease-free areas, especially to prevent the import of dangerous pathogens from abroad.
2 Conduct forecasting. For some important endemic diseases, such as rice blast, wheat stripe rust, potato late blight, etc., to explore their occurrence patterns, epidemic indicators, timely issued forecasts to guide prevention.
3 Pre-cast prevention. If seed selection, disinfection, and reasonable arrangements for crop rotation and appropriate sowing in the rotation, etc., can reduce or postpone the occurrence of the disease. For diseases that are once infested, such as wheat smut, water-dry nematode, bakanae, etc., disinfection can be performed with seeds. Agricultural control is to adopt industrial and technical measures to regulate and improve the crop's ecological environment, create conditions conducive to crops that are not conducive to pathogens, increase resistance to disease, reduce pathogenic infections, and reduce the rate of epidemics. Chemical control is a means of using chemical agents to quickly control pathogens. Biological control is the use of microorganisms that have antagonism against pathogens or their chemical products that are not used to control crop diseases.
Measures to prevent and eliminate pathogens that damage crops. Crops often suffer from disease threats during growth and product storage. Most of the crop diseases are caused by the interaction of pathogens such as fungi, viruses, bacteria, mycoplasma, nematodes, and parasitic seed plants under certain environmental conditions and host crops. This kind of disease is called infectious disease or sent to the test.