汉川县白鱼赛大队地处江汉平原,地下水位高,棉花苗期发病严重,一般年份发病率在40％左右,在雨水多,气温低的年份发病率更高。为此,我们从1973年起在这个大队进行了用“878”防治棉苗病害的试验示范工作。1975年这个大队的2,480亩棉田,在播种前全部用“878”母剂搓种,取得了较好的防病保苗壮苗效果。在全大队普遍应用“878”的同时,我们在六、七、八、九等生产队进行了181亩的药效对比示范。据在示范田的三次调查,用5％的“878”母剂搓种,棉苗炭疽病的防治效果为63.9—73.5％,平均为67.8％,且效果稳定,药效可长 Hanchuan whitefish race unit is located in the Jianghan Plain, groundwater level is high, the incidence of severe cotton seedling, the general incidence of about 40% of the year, in rainy, low temperatures, the incidence of the year is higher. To this end, we have carried out pilot demonstration work on the prevention and control of cotton seedling diseases with “878” in this unit since 1973. In 1975, 2,480 mu of cotton fields of this brigade were all rubbed with “878” mother lotion before sowing and achieved better anti-disease and seedling protection effect. At the same time that the “878” was commonly used in the entire brigade, a demonstration demonstration of efficacy of 181 acres was carried out in six, seven, eight, nine and other production teams. According to the three surveys in the demonstration field, with 5% of the “878” mother twins, the control effect of cotton seedlings anthracnose was 63.9-73.5% with an average of 67.8% and the effect was stable and the efficacy was long