论文部分内容阅读
灰霉病是棚室的常见病害,主要危害花和幼瓜,防治失时可减产20～30%以上。一、症状病菌多以开败的花侵入,使花腐烂,并且长出淡灰褐色霉层。进而侵染瓜条,造成脐部腐烂。被害幼瓜迅速变软,萎缩腐烂,其表面密生灰白色霉层。以后花瓣枯萎脱落,被害瓜轻者生长停滞,重者全瓜腐烂。叶部病斑初为水浸状,后为淡灰褐色,病斑中间有时生灰色霉层。
Botrytis is a common disease in the greenhouse, the main damage to flowers and young melons, loss prevention and treatment can reduce 20 to 30%. First, the symptoms of germs to defeat the invasion of flowers, the flower decay, and grow light gray moldy layer. Further invade the melon, causing umbilical decay. Victims of melon rapid softening, decay and decay, its surface dense gray mold layer. After the petals withered off, the victims of light melon growth stagnation, heavy whole melon rot. Leaf lesions at the beginning of the initial flooding-like, after the light gray-brown, gray mold sometimes gray mold layer.