环境因素对蚕豆花荚形成和脱落的影响

Effect of Environmental Factors on the Formation and Abscission of Flowers and Pods

利用Logistic方程和多元回归建立了蚕豆开花过程、花荚数量和脱落对光照、水分和夜温的响应模式。蚕豆开花过程符合Logistic曲线 ,土壤缺水使蚕豆始花期和单株最大开花数 5 0 %的时间提前 ,荫蔽延迟始花期和最大开花数 5 0 %到达时间。环境胁迫缩短开花持续期 ,降低花荚数。水分对开花数量的影响显著程度大于光照 。

With Logistic equation and multipe regression, the respondent models of the flowering, the amount of flowers and pods and the abscission to light, moisture and temperature at nights are established. The flowering process is in line with the logistic curve. Lack of soil water results in the advanign of the first flowering time and half of maximum flowers per plant. The flowering and half of maximum flowers will be postponed under shading. Forces of enviroment shortens flowering time and decreases the amount of flowers and pods. Moisture has a greater in fluence upon the amount of flowers than light has, while less influence upon the amount of podding than light has.