近年来,随着蔬菜保护地栽培面积的扩大,蔬菜根结线虫病在北京、郑州、开封、济南、青岛、成都等城市菜区为害日渐严重,受害蔬菜有的减产2—3成,严重的成片矮化,影响蔬菜市场供应。根结线虫病是由南方根结线虫侵染蔬菜根系造成的一种病害。受害后根部形成大量的根结(瘿瘤),影响根系的生长发育和吸收水肥功能,使蔬菜产量和品质明显下降,根结线虫寄主范围广,能侵染黄 In recent years, with the expansion of cultivated area of ​​vegetable protection, the root-knot nematode disease of vegetables is becoming more and more serious in urban vegetable areas in Beijing, Zhengzhou, Kaifeng, Jinan, Qingdao and Chengdu, and some vegetables are reduced by 2-3% Dwarf, affecting the vegetable market supply. Root-knot nematode disease is a disease caused by root-knot nematode infestation of vegetable roots. The roots formed after injury a large number of root knot (Tumor), affecting the root growth and development and absorption of water and fertilizer function, so that vegetable yield and quality decreased significantly, root knot nematode host a wide range of infection yellow