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在选择抗寒性类型或者鉴定品种对冬季不良条件抗性的育种实践中,通常采用的是传统的目视法。在某些情况下,通过在定点调查小区(调查小区法)以测定秋天植株密度并登记越冬植株数目,在此基础上评价所研究类型的抗寒性程度。如果小区出苗一致并有灌溉条件,但秋播作物往往不能获得全苗,灌溉无保证,则应用调查小区法会引起育种材料对越冬的不良条件抗
In the breeding practice of selecting the type of cold resistance or the resistance of winter wheat to the winter variety, the traditional visual method is usually adopted. In some cases, the degree of cold resistance of the type under study was evaluated on the basis of surveying the plot (survey plot method) to determine autumn plant density and registering the number of overwintering plants. If the community emerge with the same irrigation and irrigation conditions, but the autumn seeding often can not get the whole plant, irrigated without the guarantee, the application of the investigation community law will cause adverse breeding materials overwintering conditions