近几年来,在小麦生长后期经常出现白穗现象,一般年份减产5%～30%,严重地块甚至绝收。通过多年调查研究,导致小麦白穗的原因有病害、虫害等多种因素。重点对小麦全蚀病、根腐病等病害加以研究,以期减少危害,提高小麦产量和品质。1发生症状与危害 In recent years, the phenomenon of white spike often occurs in the late stage of wheat growth, the general year cut 5% to 30%, a serious block or even an absolute. After many years of investigation and research, the causes of wheat white spikes are diseases, pests and other factors. Focus on wheat eclipse, root rot and other diseases to be studied in order to reduce the harm and improve wheat yield and quality. 1 symptoms and hazards