期刊论文

Absorption of main nutrient elements by adventitious roots in flue-cured tobacco

中文

中国烟草学报

1004-5708

2009

14

6

48-52

10.3321/j.issn:1004-5708.2008.06.010

湖南中烟工业公司项目（03-001） 云南省烟草公司项目（04A02）.

本校为第一机构

通过分根试验研究了烤烟K326不定根对N、K、Ca、Mg、Cu、Mn的吸收情况,及其对烤烟体内总氮和水溶性总糖含量的影响。结果表明,当茎生不定根诱导形成后具有较强的吸收功能,明显增强了烟株的生长与对各组分的吸收和积累。研究还发现不定根对植物营养吸收表现出明显的补偿或超补偿吸收,当原根系处于营养限制胁迫条件下,不定根表现出对各类养分吸收的快速增加。这种不定根的补偿与超补偿效应对N、Mg、Cu的吸收较为突出,而对Ca、Mn的吸收则较为迟缓。

The absorption of adventitious roots on K、Ca、Mg、Cu、Mn,the effect of content of total nitrogen and water-soluble total suger in flue-cured tobacco were studied by root-divided hydroponic culture.Results indicate that it has certain absorption function after cauline adventitious roots are induced formed,the absorption and accumulation of various conponents is strengthened in tobacco plants.Compensatory or over-compensatory absorption are showed on the tobacco plants whoes only depend on adventitious roots' absorption.It is stressed by nutrien...