北京郊区蔬菜根结线虫病发生严重张云，师迎春（北京市植保站１０００２９）近些年，随着保护地迅速发展，蔬菜根结线虫病在京郊日趋严重。８０年代初，蔬菜根结线虫仅在京郊丰台花乡、海淀马连洼等地零星发生，目前海淀、丰台等地已较大面积发生，并扩展到远郊。据调查，... Vegetable root knot nematode disease in suburban Beijing is serious Zhang Yun, Shi Yingchun (Plant Protection Station, Beijing 100029) In recent years, with the rapid development of protected areas, vegetable root-knot nematode disease is worsening in the suburbs of Beijing. In the early 1980s, root-knot nematodes only occurred in flower-blossom townships such as Fengtai Huaxiang in Beijing, Malianwa in Haidian, etc. At present, Haidian and Fengtai have taken place in larger areas and have been extended to the outer suburbs. According to the survey,...