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黄瓜根结线虫病其症状主要表现为:根受害后发育不良,侧根多,在根端部形成球形或圆锥形大小不等的瘤状物,有时串生。瘤初为白色,柔软,后变为褐色至暗褐色。轻病株地上部症状不明显,重病株矮小,发育不良,叶发黄,干旱时萎蔫枯死。一般可减产20—30%,重者减产50%以上,甚至绝收。该病应采取综合防治法,才能取得理想的防治效果。 1.合理轮作韭菜、葱、蒜等抗病菜轮作,可减少土壤线虫数量,控制其危害。
Cucumber root-knot nematode disease symptoms are mainly manifested as: dysplasia after root damage, lateral roots and more, the formation of spherical or conical at the root tip of the tumor ranging in size, and sometimes string students. The beginning of the tumor is white, soft, then turned brown to dark brown. Light symptoms of the upper part of the disease is not obvious, seriously ill plants short stunted, yellow leaves, drought wilted dead. Generally reduce the production of 20-30%, heavy reduction of more than 50%, or even absolute. The disease should be taken comprehensive prevention and control law, in order to achieve the desired effect of prevention and treatment. 1. Rational rotation of leeks, onions, garlic and other disease-resistant vegetable rotation, can reduce the number of soil nematodes, control of its harm.