期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2007

33

6

681-686

10.13331/j.cnki.jhau.2007.06.013

(05-02):国家烟草专卖局和湖南省烟草专卖局项目

本校为第一机构

采用溶液培养的方法，研究了不同镁浓度（0，0.5，1，2，4，8，16 mmol/L）下烤烟干物质积累和养分吸收动态变化的特点．结果表明，不同镁浓度下烤烟干物质积累和养分吸收动态可用Logistic方程描述．镁浓度为4 mmol/L时，烤烟的干物质积累、养分的最大积累量和最大增长速率明显高于其他处理；缺镁或镁浓度过高(>4 mmol/L)都不利于烤烟的生长发育、干物质和养分的积累．缺镁和高镁都会使养分最大吸收速率日期提前，从而抑制烟株对养分的吸收．高镁虽然能增加烟株镁的积累，但过量的镁(>4 mmol/L)不利于烤烟干物质的积累．

An experiment was conducted to study the effects of different magnesium （Mg） concentration （0, 0.5, 1, 2, 4, 8, 16 retool/L） on dry matter accumulation and nutrient uptake of flue-cured tobacco. The results indicated that the dynamics of dry matter accumulation and nutrient uptake of flue-cured tobacco could be described by logistic curve equation. The maximum amount of dry matter accumulation and nutrient uptake, the maximum increase rations （MIR） of dry matter of flue-cured tobacco was obviously higher than that of other treatments when...