水稻低温冷害减产幅度模型的建立

Establishment of Decreased Yield Amplitude Model of Rice Caused by Low Temperature and Cold Damage

在水稻种植品种、栽培技术、耕作及管理水平一致的基础上,水稻的产量只决定于气象条件,而在气象条件中气温是关键因子。因此,在排除其他因素干扰后,对多年的产量与气温因子进行相关分析,建立了水稻各生育期及全生育期低温冷害减产幅度模型。

Rice yield depended only on meteorological conditions after rice varieties, planting technique and cultivation and management levels were determined. Among the meteorological conditions, temperature was the key factor. Based on the elimination of other factors, correlation analysis was made between rice yield and temperature in many years. The decreased yield amplitude model of rice in each development period and the whole development period caused by low temperature and cold damage was set up.