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马铃薯晚疫病作为一种重要病害在马铃薯种植区,每年都有不同程度的发生,我国每年由于晚疫病流行造成的损失高达10亿美元。对其识别方式进行说明,并提出相应防治措施。
As an important disease in potato growing area, potato late blight occurs in varying degrees every year. As a result, the annual loss due to the late blight epidemic in China reaches as high as one billion U.S. dollars. Explain its identification method and propose corresponding prevention and cure measures.