甜菜黑脚病研究初报

1984—1985年,通过对甘肃河西地区甜菜苗期黑脚病(立枯病)的调查,发现该病发生普遍,发病率一般在20%—80%,个别严重地块高达100%。病原菌分离鉴定主要为 Phoma betae,出现机率占78.2%,经调查11个品种(系),发病率为80—92%,除8405发病稍轻外,其余均不抗病,亦无明显的差异。

A Preliminary Study on the Blaek Leg of Sugar Beet

Black leg of sugar beet is the most serious disease during the seedling stage.The pathogen was identified to be phoma betae whose emergency rate reached 78.2%.It occurs throughout the sugar beet producing fields of Hexi region of Gansu province.The disease incidence was commonly20—80% while in some bad attacked fields it reached as high as 100%.Field survey indicated that none of the 11 varieties is resistant and there is no significant differerce among them this respecct.