小麦白秆病(Selpnophoma Sp.)就世界范围来讲,多发在栽培和野生禾本科草上。在美国、英国和北欧少数地区,亦发生在潮湿冷凉山区种植的小麦上,因局部地区发生,很少有经济重要性。在我国,小麦白秆病发生在潮湿冷凉的川西北高原、青藏高原的西藏和青海半浅半脑的山区。最近几年来,我省随着小麦栽培面积的扩大,加之新育成的小麦品种,绝大多数不抗该病,因此小麦白秆病日趋严重,已成为粮食生产上的主要限制因素。 Selpnophoma Sp. Is worldwide-endemic to cultivated and wild grass plants. In the United States, the United Kingdom and parts of northern Europe, it occurs on wheat planted in humid and cool mountainous areas, resulting in few areas of economic importance. In our country, wheat white stalk disease occurs in humid and cool plateau in the northwestern Sichuan, Tibet in the Qinghai-Tibet Plateau and semi-shallow and half-brain in Qinghai. In recent years, with the expansion of wheat cultivation area in our province, and the vast majority of the newly bred wheat varieties are not resistant to the disease, wheat white stalk disease has become increasingly serious and has become a major limiting factor in grain production.