我县1984年小麦纹枯病发生面积达27470亩,占播种面积的55％,1983年用井岗霉素防治2万亩。为搞清大面积防治效果、挽回产量损失的可靠水平和经济效益,针对1984年在小麦纹枯病常发区的唐河、何场、城厢三乡搞试验点7处,设“施药”及“未施药”两个处理,在小麦分蘖末、拨节初每 In 1984, the county saw an area of ​​27,470 mu of wheat sheath blight, accounting for 55% of the sown area. In 1983, 2,000 mu of Jinggangmycin was used for prevention and control. In order to clarify the effect of large-scale prevention and control and restore the reliable level and economic benefits of yield loss, according to 1984, in Tanghe, Hechang and Sanxiang Township, areas frequented by wheat sheath blight, 7 pilot stations were set up, And “not applied” two treatments, at the end of the tillering of wheat, early dial dial each