一、分布与态势小麦线虫病是最早被人们认识、解放后基本消灭的病害之一。我国冬春麦区均有发生,以河北、山东、江苏、安徽、浙江、甘肃、贵州等省发病猖獗。近年缺乏必要的预防措施,致使个别地区有所回升。小麦线重病除危害小麦外,还危害黑麦及燕麦。二、症状与危害小麦线虫病由小麦线虫危害引起。小麦整个生育期均可致害,尤以接近成熟时最明显。受害麦苗分蘖增多,株形矮小,叶鞘疏松,叶片皱缩、扭曲;孕穗后,茎秆肥肿、 First, the distribution and situation Wheat nematode is the earliest known people, one of the basic elimination of disease after liberation. China’s winter and spring wheat areas have occurred, rampant in Hebei, Shandong, Jiangsu, Anhui, Zhejiang, Gansu, Guizhou and other provinces. The lack of necessary precautionary measures in recent years has led to a slight rebound in some areas. In addition to harm wheat line of wheat disease, but also endangered rye and oats. Second, the symptoms and damage Wheat nematode caused by the damage caused by the wheat nematode. Wheat throughout the growth period can cause harm, especially when approaching maturity most obvious. Injured wheat seedling increased tillering, short stature, leaf sheath loose, folds, distortions; booting, stalk fat,