姜根结线虫病俗称姜癞皮病、姜蚧。经调查发现，该病在莒县局部地区小面积、点片发生，随着姜连作时间的加长有加重为害和扩大蔓延的趋势。发病重的姜失去食用价值。该病的发生及防治，以前未见报道。对此，1999年笔者进行了调查研究及综合防治试验，结果总结如下。1症状　　姜 Ginger root knot nematode disease commonly known as Gracilaria leprosy, Jiang Kui. The survey found that the disease in a small area in Pixian small area, spot occurred with the Ginger continuous extension of the time there is a worsening damage and the expansion of the trend. Serious loss of food value of ginger. The occurrence and prevention of the disease has not been reported before. In this regard, in 1999 I conducted a survey and comprehensive prevention and control test results are summarized below. 1 Symptoms Ginger