怀地黄干物质增长过程与有效积温的关系

为初步探讨怀地黄干物质增长过程与有效积温的关系，通过田间试验对怀地黄品种皇后的干物质增长状况进行分析，应用生物统计方法，配合干物质的Logistic生长曲线方程。结果表明，在供试条件下，怀地黄植株地上部干物质（Wt1）以及地下部干物质（Wt2）的增长动态与有效积温的关系符合或基本符合Logistic 方程所描述的曲线，Wt1 和 Wt2 增长盛期的转捩点（起止点）所对应的有效积温值范围是：981.6~1745.0℃ 和1655.4~2381.0℃，最大瞬时增长速率（Vmax）分别为 0.01862 g/（d ℃·株）和0.05976 g/（d ℃·株），分别出现在有效积温达1363.31 ℃和2018.22 ℃ 之时

Studies on the relationship between the course of the dry matter accumulation in Radix Rehmanniae and the available accumulation temperature

In order to study the relationship between the dry matter accumulation in Radix Rehmanniae and the available accumulation temperature, carries on the analysis to the Radix Rehmanniae variety queen’s dry matter condition by field experiments . Use the biology statistical method to coordinate the Logistic equation of dry matter. The result showed that , under the condition of experimentation , the relationship between the dry matter accumulation in aerial parts and hypogeal and the available accumulation temperature met the Logistic equation or met basically. The ranges of the effective accumulation temperature for the turning points of boom stage were: 981.6~1745.0℃ and 1655.4~2381.0℃ respectively. The highest instantaneous growth rate (Wmax) was 0.01862 g/（d ℃·plant）and 0.05976 g/（d ℃·plant） respectively ; and they appeared when the available accumulation temperature reached 1363.31 0C and 2018.22 0C respectively .