小麦根病多是土壤带菌,复合侵染,全生育期发生,苗期可致死苗,后期可造成白穗或倒伏。引起小麦根病的病菌主要有四种:纹枯病菌,全蚀病菌,根腐病菌和镰刀病菌。苗期以根腐病菌为主,拔节期以纹枯病菌为主,抽穗期以纹枯病菌和全蚀病菌复合侵染。 1.选用抗病品种。小麦根病主要发生在平原水浇地。为建立良好的群体结构,预防病 Wheat root disease is mostly soil-borne, complex infection, the whole growth period occurs, the seedling can be lethal to death, the late can cause white spike or lodging. The root cause of wheat germs are mainly four kinds: Rhizoctonia solani, total eclipse bacteria, root rot bacteria and Fusarium. The root rot pathogen was the main seedling stage, and sheath blight was the main stage of jointing stage. The sheath blight fungi and total eclipse germs were complicatedly infected at heading stage. 1. Use resistant varieties. Wheat root disease occurs mainly in plain irrigated land. To establish a good group structure, disease prevention