摘要
马占相思苗根结线虫病是新发现的一种马占相思根部病害。该病害的典型症状是地上部分生长缓慢，叶片黄化，在表土层下的根颈处及主根上，有膨大的病瘤，病瘤内有根结线虫。该病的发病率一般为１５％，严重的可达４３％。三个月苗龄的发病苗木，平均高生长比健康苗木降低２１．９％。病害发展到晚期，导致苗木死亡。该病病原是根结线虫属的一种。防治方法主要是检疫、轮作、杜绝侵染源、物理处理并结合化学药剂防治。
The RootKnot Nematode disease caused by Meloidogyne spp. is a new root disease of Acacia.mangium seedlings.The infected seedlings are stunted with yellow leaves and form swelling galls including nematode body around their collar and main root beneath the earth surface. In general,The incidence is 15%,but it will get 43% if seriously.For 3month old infected seedling,its average height is21.9% lower than healthy one.,The effective controlling methods are quarantine,seedling rotation,eradication of infection source,physical treatment and chemical nematicide.
出处
《森林病虫通讯》
北大核心
1998年第2期16-17,共2页
Forest Pest and Disease
关键词
马占相思
根结线虫病
症状
危害
SAcacia. mangium, rootknot nematode disease, symptom, damage
