人工牧草生育期间的热量条件

本文统计分析了武威地区种植的优良牧草的生育期持续日数和≥0℃的活动积温,认为一年生豆科牧草持续日数在110天以上,积温在2000度一日以上.多年生豆科牧草持续日数在120天以上,积温在1953度一日以上。多年生禾本科牧草在135天以上,积温在1650度一日以上.它们在生育期持续日数和≥0℃的活动积温成正相关,且相关显著,显著性水平0.01,在上述分析基础上建立了同归方程,回归效果检验显著,显著性水平0.01.

The Heat Conditions of Artificial Forage in Growing Period

In this paper,the growing duration and ≥0℃ active accumulative temperature of the good forage planted in the Wuwei prefecture have been processed statistically.For the annual legume the growing duration is above 110 days,and the≥0℃ active accumulative temperature is above 2000℃ day, for the perennial legume the duration 120 days,the accu- mulative temperature 1950℃—day,and for the perennialgrass 135 days and 1650℃ day,respectively.The correlation between the growing duration and active accumulative temperature is positive.Moreover the regression equations were formed and by the statistical test the regression effects are remarkable.