菊花叶枯线虫病，是由虫体细小如钱的线虫引起的。除危害菊花外，还危害百菊、大理菊、翠菊、金光菊等多种菊科植物，以及珠兰、百合、蒲包花、飞燕草、夹竹桃等草本花卉。主要危害植物的叶片，也能浸染幼芽和花。被侵染的叶片，最初出现浅黄褐色斑点，随后病斑扩展，因常受大 Chrysanthemum leaf blight nematode disease, is caused by small worms as money nematodes. In addition to damaging chrysanthemums, but also endanger Baiju, Dali Ju, aster, cimicifuga and other species of Compositae, as well as pearl, lily, Pu Baohua, delphinium, oleander and other herbal flowers. The main hazard to plant leaves, but also dip buds and flowers. Infected leaves, the initial emergence of light brown spots, then the lesion expansion, often subject to large