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一、苦瓜炭疽病识别要点:幼苗子叶边缘出现半椭圆形淡褐色病斑,稍凹陷,周围有黄白晕环,上生橙黄色点状胶质物,茎基部缢缩变黄褐色,倒伏。叶片上病斑初呈水渍状,后扩大成近圆形,湿度大时,病斑淡灰至红褐色,严重时叶片枯死。茎、叶柄上病斑椭圆或长圆形,黄褐色,稍凹陷,严重时病斑
First, the bitter melon identification points: seedlings cotyledons appear semi-oval hazel lesions, slightly depressed, surrounded by yellow and white halo, orange peel point on the plastic material, the base of the stem shrinking yellow brown, lodging. At the beginning of the leaves, the lesion appeared water-stained and then enlarged into a nearly circular shape. When the humidity was high, the spots became pale gray to reddish-brown and the leaves died when it was severe. Stems, petioles on the lesion oval or oblong, brown, slightly depressed, severe lesions