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1990年小麦病害在河北省发生普遍,危害严重,对小麦产量影响较大。小麦条锈病广泛流行,局部地区发生严重;白粉病大面积流行,感病品种病情重;杆黑粉病扩散快,部分地区减产严重;根腐病、黄矮病、丛矮病、黑穗病和叶锈病也有发生,局部流行。小麦条锈病是1975年大流行之后,最严重的一年,波及到唐山、廊坊、沧州、衡水、保定、石家庄、邢台和邯郸等地市。发生流行特点:一是发生时期偏晚,比大流行1975年偏晚1个月左右。二是发病部位,绝大部分在旗叶(占90％以上),由旗叶向中下部叶片扩散,说明我省条锈病菌全部是外
In 1990, the occurrence of wheat diseases was common in Hebei Province, with serious harm and great impact on wheat yield. Wheat stripe rust is widely prevalent and serious in some areas; the prevalence of powdery mildew is widespread; the susceptible varieties are seriously ill; the dispersal of stem powdery mildew is rapid and the yield is reduced severely in some areas; the root rot, yellow dwarf, bushy dwarf, smut And leaf rust also occurred, the local epidemic. Wheat stripe rust is the most serious year after the 1975 pandemic. It spread to places like Tangshan, Langfang, Cangzhou, Hengshui, Baoding, Shijiazhuang, Xingtai and Handan. Occurred in the popular features: First, the late occurrence of more than a pandemic late in 1975 about 1 month. Second, the incidence of parts, the vast majority of flag leaves (accounting for more than 90%), by the leaf to the lower leaves of the proliferation of bacteria in our province are all outside the rust