小麦丛矮病,在陕西俗名“小蘖”,在河北叫做“坐坡”,山东又称“芦楂”。它除为害小麦外,还能寄生在大麦、燕麦、谷子等禾本科作物和杂草上。试验证明,该病不能经土壤、汁液及病株种子传布,而是由传毒昆虫介体灰飞虱(Laodelphax striatellusFallen)传的病毒。病毒不经卵传递,但带毒若虫越冬时,病毒可以在若虫体内越冬。为了进一步控制小麦丛矮病的危害,争取高产再高产,有必要搞清病原,掌握发病 Wheat dwarf disease, common name in Shaanxi “small tiller,” called Hebei in “sit slope”, Shandong, also known as “hawthorn.” In addition to harm to wheat, but also parasitic on barley, oats, millet and other grasses and weeds. Tests show that the disease can not spread through the soil, juice and diseased plants, but by the insecticide Laodelphax striatellusFallen transmission of the virus. The virus is not transmitted by eggs, but when infected with nymphs overwintering, the virus can winter in nymphs. In order to further control the harm of wheat dwarf disease and strive for high yield and then high yield, it is necessary to understand the pathogen,