为了研究油菜冻害后减产情况及冻害减灾措施,通过冻害调查、田间测产、数据分析,研究了油菜冻害减产情况、油菜产量各构成因素减幅、油菜冻害指数与减产幅度间的关系,以及油菜冻害后不同水肥、地利条件下产量恢复情况。结果表明:油菜为无限生长型,冻害不太严重时,能够很大程度恢复生长,弥补损失,冻害严重时,弥补作用减弱;通过追肥、灌溉等肥水措施,能够有效促使油菜冻害后恢复生长,降低冻害损失。 In order to study the reduction of yield and frost damage reduction measures of rape after frost damage, through the frost damage investigation, field measurement and data analysis, the relationship between frost and reduced yield of rapeseed, rapeseed yield reduction, rapeseed frost damage index and decrease rate was studied, Frozen damage after different water, land conditions yield recovery. The results showed that when rapeseed was of unlimited growth type, the frost damage was not serious, it could restore growth to a great extent and compensate for the loss. When the frost damage was serious, the compensatory function was weakened. Through topdressing, irrigation and other fertilizer and water measures, Reduce the loss of frost damage.