The water extracts of Osmanthus fragrans Lour and Magnolia grandiflora L.had the killing rates of(74.07%) and 54.75%,and the relationship between nematicidal activities and acting time was analysed.

• 其中以桂花、广玉兰叶的水提取液对甘薯茎线虫致死效果较好；杀灭率分别为74.；07%25和54