论文部分内容阅读
蔬菜灰霉病是保护地栽培中普遍发生的病害。棚栽黄瓜、番茄、茄子和韭菜等容易发病,轻者减产20～30%,重者损失50%以上。因此,棚室蔬菜必须抓好灰霉病的防治。一、棚菜灰霉病发生特点1、灰霉病属真菌病害,花、果、叶、茎均可发病。果实染病,青果受害重,残留的柱头或花瓣多先被侵染,后向果实或果柄扩展,致使果皮呈灰白色,并生有厚厚的灰色霉层,呈水腐状,叶片发病从叶尖开始,沿叶脉间成“V”形向内扩展,黄褐色,边有深浅相间的纹
Botrytis cinerea is a common disease in protected cultivation. Planting cucumbers, tomatoes, eggplant and leeks and other easy to reduce the light output of 20 to 30% reduction, severe cases of loss of more than 50%. Therefore, greenhouse vegetables must do a good job gray mold prevention and treatment. First, the characteristics of greenhouse Botrytis cinerea 1, Botrytis cinerea is a fungal disease, flowers, fruits, leaves, stems can be disease. Fruit infected, green fruit victims, residual stigma or petal first infested, after the fruit or stalk extension, resulting in peel was gray, and the birth of a thick gray mold layer, was water rot, the incidence of leaves from the leaves Sharp start, along the veins into a “V ” shape inward expansion, brown, side of the depth of the pattern