根结线虫寄主广泛,蔬菜中以番茄、黄瓜、甜椒等受害较重,土壤、病苗、种子和灌溉水是传播病原体的主要途径。一、症状根结线虫主要危害番茄的根部,但植株地上部分有明显的异常变化。感病植株发育不良,生长缓慢,比正常植株矮小,色泽失常,叶片表现萎垂。严重时植株似缺水,开始仅 Root-knot nematode host a wide range of vegetables to tomatoes, cucumbers, sweet peppers and other victims heavier, soil, disease seedlings, seeds and irrigation water is the main route of transmission of pathogens. First, the symptoms Root-knot nematode harm the roots of tomatoes, but the plants above the ground there are obvious abnormal changes. Sickly vegetative plants, slow growth, shorter than normal plants, color disorders, leaves withered weeping. In severe cases, plants seem to be dehydrated, beginning only