呼伦贝尔地区马铃薯晚疫病防治策略分析

Analysis on Prevention and Control Strategy of Potato Late Blight in Hulunbuir

在分析影响晚疫病防治决策各因素的基础上，以品种抗病性为基础，考虑不同栽培水平、生产目的对产品的质量要求和产量预期，实行有差异的晚疫病防治措施。在呼伦贝尔岭东地区传统小垄（65 cm）栽培模式下，感病品种采取5次化学防治，抗病耐病群体采用3～5次化学防治；在大垄（75 cm或90 cm）栽培模式下，感病品种采取5～7次化学防治，高感品种及种薯采取7次以上化学防治。

Based on the analysis of the factors influencing prevention and control strategy of late blight, various late blight control measures were implemented considering different levels of resistance of varieties, cultivation modes, and requirements of production purpose for product quality and quantity. In the cultivation mode of traditional smal ridge （65 cm） in the Lingdong area of Hulunbuir , fungicides were sprayed five times for susceptible varieties and 3-5 times for resistant varieties;in the mode of big ridge （75 cm or 90 cm） cultivation, fungicides were sprayed 5-7 times for susceptible varieties and more than 7 times for highly susceptible varieties and seed potatoes.