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近年来,由于连作、早春气温变化大及防治不当,温棚番茄灰霉病发生呈逐年加重趋势,成为影响温棚番茄产量的重要因素。 一、症状 番茄的花果茎叶都可受害,叶片发病多从叶缘侵入,病斑呈V字形向内急剧扩展,造成V字形黄褐色病斑。茎部感病最初为水浸状小斑,上下扩展后呈长圆
In recent years, due to continuous cropping, early spring temperature changes and improper prevention and control, greenhouse shedding gray mold occurred year by year increased trend, becoming an important factor affecting greenhouse shedding yield. First, the symptoms Tomato flower cymbidium stems and leaves can be affected, the incidence of leaves more from the leaf margin intrusion, the lesion was V-shaped sharp expansion inward, resulting in V-shaped tan spots. Stem sensation was initially flooded-like plaques, oblong up and down after expansion