试验结果表明,烯效唑对小麦黑胚病菌有强烈的抑翻作用,低浓度(5～15mg/kg)烯效唑可抑制黑胚病对黑胚粒发芽、出苗的影响,促进黑胚粒的发芽和出苗;高浓度(20mg/kg)烯效唑则抑制黑胚粒发芽和出苗;用10～15mg/kg烯效唑浸种可预防和防治小麦黑胚病发生。而且幼苗生长旺盛,根系发达。目前河北省推广的小麦品种黑胚率为11.1％,严重者高达42.8％。链格孢菌(Alternaria tenuis)是导致小麦黑胚病发生的主要病原菌,占病原分离物的91.4％。 The results showed that uniconazole strongly inhibited the growth of wheat black germ, and the low concentration (5-15 mg / kg) of uniconazole could inhibit the effect of black embryo on the germination and emergence of black embryo and promote the growth of black embryo (20mg / kg) of uniconazole inhibited the germination and emergence of black embryos; soaking with 10 ~ 15mg / kg uniconazole could prevent and control the occurrence of blackhead disease in wheat. And vigorous growth of seedlings, roots developed. At present, the promotion of wheat varieties in Hebei Province black embryo rate was 11.1%, severe cases up to 42.8%. Alternaria tenuis is the main pathogen leading to the occurrence of blackhead disease in wheat, accounting for 91.4% of the isolates of pathogens.