How to prevent and cure wheat whole rot disease?

Wheat full-blown disease has occurred in parts of the northern Henan and western Henan wheat areas, and has risen in recent years. The disease occurred in one episode, spreading rapidly and causing serious damage. In general, it takes only three years for sporadic cases to die, and the incidence of land parcels is generally reduced by 10% to 20%, and more than 50% is even more serious. It is a devastating disease. Whole wheat rot disease is a root disease, and seedling roots, secondary roots and underground stems become dark, and the surface and internal decay. Before and after delivery, the old leaves of the base turn yellow, the tillers are reduced, the growth is debilitated, and severe death occurs. After the jointing, the roots and base of the stem deteriorated and the plants dwarfed. The blackish rot of the stem base at the heading grain filling stage is more obvious. Typical symptoms of black feet are formed, the leaf sheath is easy to peel off, and the inner surface of the stem and base are black. Black punctiform ascospore shells are visible near the time of harvest. As the roots and stalks rot, the plants will wither early and form "white spikes" with false spikes or pods. Full-bleeding disease is a fungal disease caused by Ascomycetes. The pathogenic bacteria are saprophytic or dormant on mycelia in the petrified soil and become the main primary infestation source. The seeds mixed with diseased bodies are the main components of long-distance transmission. way. Wheat can infect from seedlings to heading, but it is most vulnerable to infection at the seedling stage, resulting in the most serious losses. Full-etching disease is primarily inflicted, and infection is not important. Barley, wheat, and other host crops are in serious trouble, and the incidence of multiple crops in wheat and corn is heavy. Loose soil, alkaline, organic matter, phosphorus deficiency, nitrogen deficiency, and low soil fertility are all heavy. All sorts of prevention and control of wheat diseases should be carried out. The non-disease area was prevented from being introduced, the initial area was put into extermination, and the old area was based on agricultural measures, and actively adjusted the ecological environment of the crop supplemented with comprehensive prevention and control measures for the prevention and control of chemicals. (1) Rational crop rotation: There are rice and wheat crop rotations in water areas, dryland wheat and non-host crops such as cotton, sweet potato, tobacco, etc. can significantly reduce the disease; for the impending recession, wheat or corn must be kept replanting or continuous cropping to promote full erosion natural decline. (2) Strengthen field management: The application of organic fertilizers, ploughing, cultivating in time, and strengthening fertilizer and water management can all reduce the disease. (3) Chemical control: When sowing seeds, 0,03% of the active ingredients of Triadimefon can be used to stop seeding, or 12,5% of Tepuzole wettable powder can be detained according to 0,05% of the seed amount, which can effectively control the whole plant. Erosion. In the jointing stage of wheat, 15% triadimefon powder per mu can be used for 150g--200g, or 20% triadimefon emulsifiable concentrate 100ml--150ml per mu, plus 50kg of water--60kg of pour wheat. Up to 60% on the hair.

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