目前在测定由小麦赤霉病造成的产量损失时,因各地所用方法不同,导致同一病情测出的产量损失相差较大,使各地产量损失难以比较。针对这一情况,在江苏江宁做了如下试验: 试验设计 田间调查取样 选用当地推广品种扬麦3号和宁麦3号,在赤霉病病情稳定且症状明显时,大面积调查病穗率,病情指数;另外,各品种在 At present, when determining the yield loss caused by the wheat head blight, the yield loss detected by the same disease varies greatly due to the different methods used in different places, making it difficult to compare the yield losses in various places. In response to this situation, the following experiment was conducted in Jiangning, Jiangsu Province: Experimental Design Field survey sampling selected local popularized varieties Yangmai 3 and Ningmai 3. When the disease was stable and the symptoms were obvious, Disease index; In addition, all varieties in