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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 years showed that under the second crop production level, the growth dynamics and effective accumulated temperature of shoots (wt1) and their effective accumulated temperature (t ) Are in line with the curve described by the Logistic equation. The effective accumulated temperature ranges from 635 0 to 1033 3 ℃ and 671 5 ~ 1077 9 ℃, respectively, at the transition point (starting and ending) of the peak growth of wt1 and wt2, the maximum instantaneous The growth rates (Vmax) were 0 442g · d-1 · ℃ -1 · plant -1 and 0 332g · d-1 · ℃ -1 · plant-1, respectively. The effective accumulated temperature reached 834 1 ℃ and 874 at 7 ℃.