根际二氧化碳浓度对马铃薯植株生长的影响

应用生态学报 ›› 2005, Vol. 16 ›› Issue (11): 2097-2101.

根际二氧化碳浓度对马铃薯植株生长的影响

孙周平, 李天来, 范文丽

沈阳农业大学园艺学院辽宁省设施园艺重点实验室, 沈阳 110161

收稿日期:2005-02-24 修回日期:2005-05-21 出版日期:2005-11-15 发布日期:2005-11-15
通讯作者: 李天来
基金资助:
国家"十五"科学技术攻关项目(2001BA503B06)和辽宁省教育厅科学研究计划资助项目(2004F083).

Effects of rhizosphere CO₂ concentration on potato growth

SUN Zhouping, LI Tianlai, FAN Wenli

Key Laboratory of Protected Horticulture of Liaoning Province, College of Horticulture, Shenyang Agricultural University, Shenyang 110161, China

Received:2005-02-24 Revised:2005-05-21 Online:2005-11-15 Published:2005-11-15

摘要/Abstract

摘要： 以汽雾法栽培方式为基础,建立根际气体环境研究系统,研究了根际不同CO₂浓度连续处理36d对马铃薯植株生长的影响.结果表明,随着根际CO₂处理时间的延长,根际380～920 μmol·mol^-1 CO₂处理和380 μmol·mol^-1CO₂处理之间马铃薯植株的株高、茎粗、叶面积、鲜重、根系长度、匍匐茎和块茎等生育指标生长变化比较一致,呈现明显的二阶段增长特点;与3 600 μmol·mol^-1高CO₂处理的根际比较,前2个处理植株生长发育旺盛,块茎产量明显增加,说明根际一定浓度CO₂富积,对马铃薯生长有促进作用,而根际过高浓度CO₂环境,则对马铃薯生长有抑制作用.根际3 600μmol·mol^-1高CO₂处理与沙培处理植株的地上茎粗和叶面积、地下匍匐茎和块茎数量等非常接近,表现在植株生长矮小,块茎产量较少,说明沙培处理植株生长发育比较弱,其原因可能与根际较高浓度CO₂的影响有关.

关键词: 马铃薯, 汽雾法栽培, 根际CO₂处理

Abstract: With the method of areoponics,this paper established a rhizosphere gas environment research system to study the effects of different rhizosphere CO₂ concentration on the growth of potato(Solanum tuberosum)plants.The results showed that in treatments 380 and 380～920 μmol CO₂·mol^-1,the plant height,stem diameter,leaf area,root length,and individuals of stolon and mini-tuber had a similar variation trend with time,and presented two distinct phases.The plants grew vigorously,and their tuber yield increased markedly,compared with treatment 3 600 μmol CO₂·mol^-1,which indicated that 380～920 μmol CO₂·mol^-1 was the appropriate CO₂ concentration in the root zone to promote potato growth,while overmuch rhizosphere CO₂ would markedly inhibit the growth and development of potato plants.Treatment 3 600 μmol CO₂·mol^-1 and sand culture had the similar stem diameter,leaf area,and individuals of stolon and mini-tuber.The plants grew short and weak,and tuber yield was lower.

Key words: Potato, Areoponics, Rhizosphere CO₂ treatment

中图分类号:

Q948.15

孙周平, 李天来, 范文丽. 根际二氧化碳浓度对马铃薯植株生长的影响[J]. 应用生态学报, 2005, 16(11): 2097-2101.

SUN Zhouping, LI Tianlai, FAN Wenli . Effects of rhizosphere CO₂ concentration on potato growth[J]. Chinese Journal of Applied Ecology, 2005, 16(11): 2097-2101.

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