番茄斑枯病,又叫斑点病、鱼目斑病、白星病,是番茄上的重要病害之一,在各生育时期均有发生,在结果期发病严重时,会造成早期落叶,影响产量。 该病主要危害叶片、茎和花萼,果柄和果实受害较少。一般植株下部老叶先发病,逐渐向上蔓延。初发病时,叶片背面出现圆形水渍状小斑点,以后稍扩大,边缘深褐色,中心灰白色,并散生黑色小粒点。由于病斑形状如鱼目,故有鱼目斑病之称。发病严重时,叶片逐渐枯黄, Tomato spot blight, also known as spot disease, fish head spot, white star disease, is one of the important diseases on tomato, have occurred in all reproductive periods, the incidence of serious consequences in the period, will result in early deciduous, affecting the yield. The disease endanger leaves, stems and calyx, fruit stalk and fruit less damage. Lower leaves of the general plant first onset, gradually spread upward. Initial incidence, the back of the leaves appear round water-like small spots, slightly expanded later, the edge of dark brown, gray center, and scattered black small particles. As the lesion shape such as fish head, so there is a fish spot disease known. Serious onset, the leaves gradually yellow,