根结线虫病是蔬菜较为严重的病害之一,主要危害黄瓜、苦瓜、番茄、茄子、菜豆、芹菜、菠菜、胡萝卜等多种常见蔬菜。随着种植业结构调整,蔬菜保护地栽培面积迅速扩大,导致根结线虫病逐年加重,产量损失达30%～50%,毁苗重植事件经常发生。根结线虫危害又加重了枯萎病、根腐病等土传性真菌病害和部分细菌病害的发生,已成为当前蔬菜生产的一大障碍。近年来,温室黄瓜和番茄受害严重,常造成严重减产甚至绝收,且病害呈逐年上升趋势。在此,笔者告诉大家根结线虫发生症状以及防治方法。 Root knot nematode disease is one of the more serious diseases of vegetables, the main hazards cucumber, bitter melon, tomato, eggplant, beans, celery, spinach, carrots and other common vegetables. With the adjustment of planting structure, the area of ​​vegetable cultivation rapidly expanded, resulting in the year-by-year increase of root-knot nematode disease, with the yield loss of 30% -50%. The destruction of seedling replanting events often occurred. Root-knot nematode hazards have increased the occurrence of soil-borne fungal diseases such as blight and root rot, and some bacterial diseases, which have become a major obstacle to the current vegetable production. In recent years, greenhouse cucumbers and tomatoes suffered serious damage, often resulting in serious or even absolute decline in production, and disease showed a rising trend year by year. Here, I tell you the root knot nematode symptoms and prevention methods.