棉苗根病是棉花苗期的主要病害,五十年代,开始应用五赛(西)合剂拌种,对控制棉苗根病为害起了很大作用。但自有机汞制剂因公害问题限用以来,多数棉区不作拌种防治,根病发生为害更为严重。七十年代,用多菌灵防治棉苗根病有较好效果,但因药源不足,成本较高,限制了生产上推广应用。同时,单一杀菌剂拌种难以取得稳定的良好防病效果。另 Cotton seedling root disease is the main disease in cotton seedling stage. In the 1950s, the application of five race (West) mixture seed dressing played a significant role in the control of cotton seedling root disease. However, since the limited use of organic mercury preparations due to pollution problems, most cotton areas are not treated for seed dressing, root cause more serious damage. In the seventies, the use of carbendazim prevention and treatment of cotton seedling root canal disease has a better effect, but due to lack of resources, higher costs, limiting the promotion of production. At the same time, a single fungicide seed dressing difficult to obtain a stable good disease control effect. another