摘要
不同年份两地田间试验研究结果表明,在作物第二生产水平下,烤烟NC89品种移栽至大田后,植株地上部干物质(wt1)及其叶片干物质(wt2)增长动态与有效积温(t)的关系均符合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分别是:635 0～1033 3℃和671 5～1077 9℃,最大瞬时增长率(Vmax)分别为0 442g·d-1·℃-1·株-1和0 332g·d-1·℃-1·株-1,分别出现在移栽后有效积温达834 1℃和874 7℃之时.
The results of field experiments in two places of different years indicated that,under the second level of crop production,the relationship between the dry matter accumulation in aerial parts and leaf and the available accumulation temperature after flue-cured tobacco NC 89 was transplanted met the Logistic equation.The ranges of the effective accumulation temperature for the turning points of boom stage were:635.0～1 033.3℃ and 671.5～1 077.9℃ respectively.The highest instantaneous growth rate (V_(max)) was 0.442 g·d^(-1)·℃^(-1)·plant^(-1) and 0.332 g·d^(-1)·℃^(-1)·plant^(-1) respectively; and they appeared when the available accumulation temperature reached 834.1℃ and 874.7℃ respectively, after transplantation.
出处
《河南农业大学学报》
CAS
CSCD
2004年第1期28-32,共5页
Journal of Henan Agricultural University
关键词
烤烟
地上部干物质
叶片干物质
有效积温
转捩点
flue-cured tobacco
dry matter weight of aerial parts
dry matter weight of leaf
available accumulation temperature
turning point
