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大麦是江苏、浙江一带的主要夏熟粮食、饲料及酿造原料作物。江苏省扬州市种植面积达205万亩以上,占三麦面积的37.4%。近年来随着耕作制度的变化和品种的更换,原来广为种植的六棱大麦和元麦均基本被淘汰,改种了二棱大麦早熟三号。由于这个品种容易感染黄花叶病,一般发病后减产1～2成,重者达5成以上。自1975年以来利用抗病品种、轮作换茬和适当推迟播期及病田深翻等,能有效地控制病害达到持续高产的目的。目前这一措施已在大面积推广示范应用。经济效益和社会效益均较明显。
Barley is the main summer ripe food, feed and brewed raw material crops in Jiangsu and Zhejiang provinces. Yangzhou City, Jiangsu Province, planting area of 205 mu, accounting for 37.4% of the area of three wheat. In recent years, with the change of cultivated system and the change of breed, the originally widely planted hexagonal barley and Yuanmai were all basically eliminated, and the seeds of two-rowed barley were replanted. As this species susceptible to yellow mosaic disease, the general incidence of 1 to 2 months after cut, severe cases of more than 5 percent. Since 1975, the use of disease-resistant varieties, crop rotation and appropriate delayed sowing and sowing deep plowing and so on, can effectively control the disease to achieve the purpose of sustained high yield. At present, this measure has been widely applied in demonstration and promotion. Economic and social benefits are more obvious.