近年来,小麦全蚀病在一些地区发病的地块越来越多,发病轻的可减产1～2成,严重的减产达一半以上,甚至绝收。因此在无病区应注意防治其传入蔓延。 症状:从苗期至生长期均可发病。新发病的地块,病株常零星成簇分布,小麦抽穗前一般不表现症状,但发病年限越久的地块,土壤中菌量 In recent years, the total eclipse of wheat disease in some areas more and more parcels, the incidence of light can be reduced by 1 to 2 percent, a serious reduction of more than half, or even absolutely. Therefore, in the disease-free zone should pay attention to prevent its spread. Symptoms: from the seedling to the growth stage can be disease. The new disease plots, diseased plants often sporadic clusters, generally do not show symptoms before heading wheat, but the longer the duration of the plot, the amount of soil bacteria