6种杀菌剂对苜蓿种子携带主要病原菌的抑制效果及其对种子发育的影响

Inhibitory Effect of 6 Kinds of Fungicides on Alfalfa Seed Carrying Pathogens and Its Seed Development

【目的】比较不同杀菌剂对苜蓿种子的带菌消毒效果和对幼苗生长的影响,为苜蓿种子播前包衣处理和种带真菌病害防控提供依据。【方法】选用6种普遍适用于种子处理的广谱型杀菌剂,针对从苜蓿种子中分离到的4种分离率高、致病性强的真菌,研究杀菌剂处理种子的消毒效果及其对种苗发育的影响。【结果】80%多菌灵、75百菌清%和50%福美双对苜蓿种子携带真菌均有显著的处理效果,且不抑制种苗发育。【结论】80%多菌灵、75百菌清%和50%福美双这三种药剂可以作为苜蓿种衣剂研制中的优选杀菌有效成分。

[ Objective] The project aims to study the effects of different fungicides on the disinfection of alfalfa seeds and the growth of seedlings, which might provide the basis for the seed coating treatment and the prevention and control of germplasm. [ Method ] A total of six broad - spectrum fungicides, which were generally suitable for seed treatment, were used to isolate four kinds of fungi with high isolation rate and pathogenicity from alfalfa seeds, and the disinfecting effect of fungicides and their effects on seedling development research was conducted. [ Result180% earbendazim,75% ehlorothalonil and 50% thiram had significant treatment effect on fungi carried by alfalfa seeds, and they all did not inhibit the seed development. [ Conclusion ] 80% earbendazim,75% ehlorothalonil and 50% thiram can be used as a key fungicide in alfalfa seed coating.