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编辑同志: 近两年,我场的棉苗被一种“枯萎”病严重的摧残着,并有受灾面积年年上升的趋势。眼看着大片大片长出果枝的棉苗慢慢地枯萎而
Editor’s Comrade: In the past two years, the cotton seedlings in my field have been severely damaged by a kind of “withered” disease and the area affected has been increasing year by year. Watching large tracts of cotton seedlings grow slowly withered