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选育推广抗病品种，是综合防治中最为经济有效的措施，其基础工作是对不同品种进行抗病性鉴定。目前采用的田间接种鉴定
Breeding and popularizing disease-resistant varieties is the most economical and effective measure in comprehensive prevention and treatment, and its basic work is to identify the disease resistance of different varieties. Field vaccination currently used