番茄早疫病又称轮纹病、夏疫病。温室、大棚栽培番茄全年均可发生 ,但以春播番茄为重。本病除直接危害茎、叶、果外 ,还抑制番茄生长和果实形成 ,造成常年损失 2 0 %～30 % ,严重时可达 5 0 %以上或毁棚。一、症状识别　叶、茎、花、果均可发病。叶片初呈针尖大的小黑点 ,后发? Early blight, also known as rotten tomato disease, summer epidemic. Greenhouse, greenhouse cultivation of tomatoes can occur throughout the year, but to spring sowing tomato weight. In addition to direct harm to the disease stems, leaves, fruits, but also inhibit tomato growth and fruit formation, resulting in annual loss of 20% to 30%, severe up to 50% or destroyed shed. First, the symptoms identified leaves, stems, flowers, fruit can be disease. The beginning of the blade tip small black spots, after the hair?