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1990年,小麦条锈病、白粉病、纹枯病、秆黑粉病等主要病害在我省大流行。其发生范围之大、程度之重为建国40年来所少有,虽经防治,仍造成较大损失,致使前期生长良好的小麦没能达到预期产量水平。据初步估算,仅因病害减产的小麦就在9亿公斤以上。因此,有必要认真回顾、分析去年的麦病发生情况和流行原因,探讨今后防治对策,以获得理想的经济、生态和社会效益。这是我省夏粮生产能否迈上新台阶的一个重要前提。一、1990年发生情况,就全省而言,小麦病害属于中度偏重至大流行年,其发生特点是“种类多、范围广、面积大、来势猛,危害重,南部重于北部、
In 1990, wheat stripe rust, powdery mildew, sheath blight, stalk powdery mildew and other major diseases in our province pandemic. The extent of its occurrence is large and its weight is less than 40 years after the founding of the People’s Republic. Despite its prevention and control, it still caused relatively large losses, resulting in the failure of the well-developed wheat to reach the expected output level. According to preliminary estimates, the output of wheat decreased by more than 900 million kilograms due to disease only. Therefore, it is necessary to carefully review and analyze the occurrence and prevalence of wheat diseases last year and explore future prevention and control measures to achieve the desired economic, ecological and social benefits. This is an important prerequisite for our province’s summer grain production can reach a new level. I. Occurrence in 1990 As far as the province is concerned, the disease of wheat belongs to the moderate to the pandemic year. Its occurrence is characterized by "many types, wide scope, large area, fierce tendency and heavy damage. The southern part is heavier in the north,