植物生长调节剂对烟草生长发育及钾素吸收与分配影响研究

通过盆栽试验,采用不同钾素水平,在烟草植株打顶后夹吸不同的植物生长调节剂对烟草生长发育进行研究。研究表明,不同钾水平对烟草植株的株高、最大叶面积、根体积、倒二叶叶面积均没有显著的促进作用,但是能够显著增加根鲜重,而烟株打顶后夹吸生长调节剂能显著地促进烟草植株的株高、最大叶面积、根体积、根鲜重、倒二叶叶面积的增长。同时,植物生长调节剂能明显提高不同部位烟叶中的钾含量和各部位钾素的积累量,促进钾素从根、茎部向叶部的转移,显著提高烟草的品质,其中表油菜素内酯(BR)与赤霉素(GA3)处理效果最为明显。

Effect of plant growth regulators on tobacco growth potassium absorption and distribution

The paper studied the effect of top pruning and plant growth regulators on tobacco growth and development under different potassium level by pot trail.The results showed that: There were no significant effects of applied potassium in different level on tobacco plant's truck height,the maximum leaf area,root volume and area of the second leaf from below,but could significantly effect fresh root weight on increase.While plant growth regulators after top pruning could increase the value of plant's truck height,the maximum leaf area,root volume,fresh root weight and area of the second leaf from below.The plant growth regulators could significantly increase the content of K in all of part of tobacco leaves and the K accumulation,and could promote potassium transfer from root and stem to leaf,so improve the quality of tobacco leaf,the BR and GA3 treatment more better.