水稻干尖线虫病是由线虫为害引起的,它是国内检疫性病害,我省已多年没有发生,但最近几年在沈阳等地又有发生.病害最突出的特点是,一株同时几个叶片出现干尖,心叶及其以下第二、三片叶子,顶端2～6厘米长变白枯死,病部干枯后还会出现捻曲现象.幼苗在四叶期开始发生, Rice dry tip nematode disease is caused by nematode damage, it is a domestic quarantine disease, our province has not occurred for many years, but in recent years in Shenyang and other places have occurred. The most prominent feature of the disease is a few at the same time Leaves appear dry tip, the heart leaves and the following second and third leaves, the top 2 to 6 cm long white dead, the disease will appear after twisting dry twist phenomenon.Seeding in the four-leaf stage,