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1986～1987年,在陕西大荔县园艺站、植保站的连茬瓜田里试用高锰酸钾防治西瓜枯萎病。分
From 1986 to 1987, potassium permanganate was used to prevent and cure watermelon blight in the continuous cropping of melons in Dali County Horticultural Station and Plant Protection Station in Shaanxi Province. Minute