摘要： 1986～1990年的研究结果发现,在玉米穗腐病流行年份,抗病和感病玉米自交系的严量损失分别比常年高21%和35%。在气候因素中,日照时数对发病和产量损失影响较大。同一气候条件下感病系比抗病系产量损失大52%～82%。感病品种因穗腐病造成的玉水产量损失比不利的气候因素更为严重。

关键词: 玉米穗腐病, 串珠镰刀菌, 产量损失, 不同品种, 气候因素

Abstract: Results from investigations over 5 years (1986-1990) indicated that the yield loss of corn resistant or susceptible inbred lines were 21% and 35%higher in the epidemic years than those in the ordinary years respectively.The factor of sunshine hours was more important to the occurrence of the disease than other climatic factors. Under similar climatic conditions, the yield loss of the susceptible lines was 52%-82% higher than that of the resistant lines.For susceptible varieties, the yield loss of corn caused by ear rot disease is more serious than under unfavourable meteorological conditions.

Key words: Corn ear rot disease, Fusarium monlliforme, Yield loss, Varieties, climatic factor