At present, corn has grown to the middle and late stages. In order to ensure production, pests and diseases must be strengthened. The end of August is the peak period of various insect pests. Serious corn spot, small leaf spot, bacterial wilt, brown spot, and sheath blight occurred. Seedling blight, rough dwarf disease, and rust disease also occurred in some areas. It caused a great deal of corn production. influences. The main prevention measures include:
Promote disease-resistant varieties Use modern high-tech to breed multi-resistance varieties and improve coverage of improved varieties.
Seed treatment is coated with Shiraoke, Rickett, and corn seed coating agents to kill pathogenic bacteria carried by the seeds and prevent seedling diseases.
Crop rotation and non-grass crop rotations reduce pathogen accumulation.
Strengthen the management of farmland with more mature farmyard fertilizers, increase phosphorus, potash fertilizer and trace fertilizer; reasonably close planting, timely cultivating and rowing crops, and create an environment conducive to corn growth that is not conducive to disease occurrence.
In the clean field, the diseased leaves at the bottom are removed timely, and the diseased bodies are taken out of the field for destruction after harvest to reduce the sources of initial disease infestation.
In the case of scientific application of seedlings during the rainy period, carbendazim should be sprayed as early as possible to prevent seedling blight and sheath blight; in drought-prone years, spraying of yinjing, Dagongchen, etc In the early stage of the development of dwarfism and dwarf mosaic disease, the mediators were sprayed with virus A, OS-Stelen, and Mycotoxin. In the fields where rust and sheath blight occur, use wolfberry fruit and triadimefon for prevention and treatment.
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