论文部分内容阅读
马铃薯由于被病毒单独或复合感染引起的病害称病毒病害。病毒侵染马铃薯植株后,逐渐向块茎中转移,并在块茎中潜伏和积累,通过无性繁殖,世代传递,导致产量逐年降低,品质变劣;同时表现出各种畸形症状,最终失去种用价值。一般可使马铃薯减产20%~30%,重者减产50%以上。一、发病症状大多数病毒病在得病当年症状不明显,但在温度较高的地区,症状逐年严重。马铃薯普通花叶病毒病症状:叶片颜色深浅不一,但叶片平展,不明显变形,叶脉不坏死。马铃薯
Potato is called a virus disease because it is a disease caused by a virus alone or in combination. After the virus infects potato plants, it gradually translocates to the tubers and lurks and accumulates in the tubers. Through the process of asexual reproduction and generational transfer, the yield decreases and the quality deteriorates. At the same time, various deformities and eventually the useless value are lost . Generally reduce the potato yield by 20% to 30%, severe reduction of more than 50%. First, the incidence of symptoms Most of the virus disease in the disease was not obvious symptoms, but in the hotter areas, the symptoms year after year serious. Potato common mosaic virus disease symptoms: different leaf color depth, but flat leaves, no significant deformation, the vein is not necrosis. potato