柳树根结线虫病是危害柳树根部的一种病害,系根结线虫(Meloidogyne spp.)危害所致。感病柳树由于根功能衰退,导致植株生长衰弱,并诱发真菌性病害,造成植株枯死。笔者自1981年开始对杭州市西湖周围的柳树进行了病害调查和防治试验,现将试验结果报道如下。一、症状柳树侧根和须根遭根结线虫侵染后,诱致细胞噌大、增生,形成许多大小不等的瘤状物(根瘤)。严重感病的根比未感病的要 Willow root-knot nematode disease is a disease that damages the roots of willow and is caused by Meloidogyne spp. Sick willow due to decline in root function, leading to plant growth and weakness, and induce fungal diseases, resulting in dead plants. Since 1981, the author has carried out disease investigation and prevention and control tests on willow trees around West Lake in Hangzhou. The test results are reported as follows. First, the symptoms Willow lateral roots and fibrous roots were infected by root-knot nematode, resulting in large cell mismatches, hyperplasia, the formation of many sizes of nodules (nodules). Severe susceptible to the root cause than not