“紫秆病”是我省近年来水稻上新发展起来的一种病害。发生面积逐年扩大,为害程度日趋加重。此病病源尚未肯定,为了对其发生、发展有所了解,笔者从1979年起对此病进行了初步的探索,兹将调查情况简述如下: “Purple stalk disease” is a newly developed rice disease in our province in recent years. The area of ​​occurrence has expanded year by year, and the degree of harm has been aggravating day by day. The etiology of the disease has not yet been affirmed. In order to understand its occurrence and development, the author made a preliminary exploration of the disease since 1979, and will briefly summarize the investigation as follows: