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以前黄瓜黑星病在佳市郊区极少发生,今年全郊区有80余栋大棚发生此病害。在发病较重的棚中调查,病株率高达100％,病瓜率高达77％。
Cucumber scab disease in the suburbs of Jiashi rarely occurred this year, the whole suburbs of more than 80 greenhouses occurred in the disease. In the incidence of heavier shed survey, the diseased plant rate as high as 100%, disease rate as high as 77%.