三河市早春番茄发生叶霉病比较普遍,为此,及早预防番茄叶霉病的发生是非常必要的。番茄叶霉病俗称黑毛,仅危害番茄。一、发生症状:(1)该病害主要危害叶片,也危害茎、花和果实。叶片受害,最初在叶背面出现椭圆形或不规则形的淡绿色褪绿斑,后在病斑上产生灰色渐转 Early spring in Sanhe City, tomato leaf mold occurs more common, therefore, early prevention of tomato leaf mold is very necessary. Tomato leaf mold commonly known as black hair, only harmful to tomatoes. First, the occurrence of symptoms: (1) The disease is mainly endanger the leaves, but also endanger the stems, flowers and fruits. Leaf damage, initially in the back of the leaves oval or irregular shaped pale green faded green spots, after the gray spots on the gradual