干旱胁迫对小叶杨幼苗生长的影响

仇云峰; 李亚光; 李青山

doi:10.13961/j.cnki.stbctb.2015.02.009

您当前的位置：

首页 >

文章列表页 >

干旱胁迫对小叶杨幼苗生长的影响

试验研究

- 干旱胁迫对小叶杨幼苗生长的影响
- Drought Stress Effects on Growth of Populus Simonii Seedlings
- 水土保持通报 2015年35卷第2期页码：42-45
- 作者机构：
  
  北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室,北京,100083
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.02.009
  中图分类号：
- 纸质出版：2015
- 稿件说明：
移动端阅览
仇云峰, 李亚光, 李青山. 干旱胁迫对小叶杨幼苗生长的影响[J]. 水土保持通报, 2015,35(2):42-45.

QIU Yunfeng, LI Yaguang, LI Qingshan. Drought Stress Effects on Growth of Populus Simonii Seedlings[J]. Bulletin of Soiland Water Conservation, 2015, 35(2): 42-45.
仇云峰, 李亚光, 李青山. 干旱胁迫对小叶杨幼苗生长的影响[J]. 水土保持通报, 2015,35(2):42-45. DOI： 10.13961/j.cnki.stbctb.2015.02.009.

QIU Yunfeng, LI Yaguang, LI Qingshan. Drought Stress Effects on Growth of Populus Simonii Seedlings[J]. Bulletin of Soiland Water Conservation, 2015, 35(2): 42-45. DOI： 10.13961/j.cnki.stbctb.2015.02.009.

摘要

[目的

]

了解小叶杨的抗旱机理

为山西省北部半干旱风沙区小叶杨防护林建设提供科学依据。[方法

]

通过在山西省苗圃基地盆栽模拟干旱试验

以小叶杨生长过程中的苗木株高和地径

根、茎、叶生物量

叶片相对含水量和水势

净光合速率、蒸腾速率等为生长和生理指标

研究干旱胁迫对小叶杨幼苗生长的影响。[结果

]

干旱胁迫抑制了小叶杨幼苗的生长

包括地上部分和根系的生长;叶片相对含水量和水势随土壤相对含水量降低而下降;各干旱梯度下CK

的净光合速率、蒸腾速率也随干旱梯度加深而降低

但从CK (田间持水量

土壤含水量20.3%)到T

(田间持水量的40%

土壤含水量8.12%)净光合速率和蒸腾速率随干旱梯度加深降幅逐渐较小

并且干旱时也能保持较大的光合速率和蒸腾速率

表明小叶杨具有明显抗旱特性;当土壤水分进一步减少

(田间持水量的30%

土壤含水量为6.09%)时小叶杨开始出现干枯现象

(田间持水量量的20%

土壤含水量为4.06%)时小叶杨全部死亡。[结论

]

山西省西南部及其周边地区进行小叶杨造林时

土壤水分应尽量要保持在6.09%(T

)以上。

Abstract

[Objective] This paper aimed to explore the drought resistance mechanism of Populus simonii

and to provide a scientific basis for the construction of the shelterbelt in the northern of Shanxi Province.[Methods] The effect of drought stress on Populus simonii seedling growth was studied based on the pot experiment conducted in the Taidu nursery base of Jixian Forestry Bureau in the southwest of Shanxi Province. The experiment simulated drought conditions and used the Populus simonii from a loess gully region as the provenance material. And height and ground diameter of the seedling

the biomass in leaves

stems and roots

the relative water content and water potential

net photosynthetic rate

transpiration rate and other growth and physiological indexes were measured in order to study the effects.[Results] The results showed that drought stress inhibited the growth of the Populus simonii seedlings

including the aboveground parts and the root system; Leaf relative water content and water potential decreased with the reduction of the relative water content of soil. In different drought gradient treatments(CK

T5)

net photosynthetic rate and transpiration rate slowed down with the severeness of drought stress. However

in the treatments of CK(field capacity) to T3 (40% of field capacity

soil water content is 8.12%)

the declined rates were gradually smaller; in addition

the Populus simonii seedlings could maintain a relative large photosynthetic rate and transpiration rate

which indicated that Populus simonii had obvious drought resistance. When soil moisture further reduced

Populus simonii appeared to be drying in the period of T4 (30% of field capacity

soil water content is 6.09%)

and in T5 (20% of feild capacity

soil water content is 4.06%) all died.[Conclusion] In the southwest of Shanxi Province and the surrounding areas

soil water should be stayed above 6.09%(T4) as far as possible while planting Populus simonii.

关键词

Keywords

references

Lange O L, Kappen L, Schulze E D. Water and plant life:Problems and modern approaches[M]. Berlin:Heidelbergs Springerverlag,1976.

Bachelard E P. Effects of soil moisture stress on the growth of seedlings of three eucalypt species. Ⅱ:Growth effects[J]. Australian Forest Research, 1986, 16(1):51-61.

李林锋,刘新田.干旱胁迫对桉树幼苗的生长和某些生理生态特性的影响[J].西北林学院学报,2003,19(1):14-17.

马富举,李丹丹,蔡剑,等.干旱胁迫对小麦幼苗根系生长和叶片光合作用的影响[J].应用生态学报,2012,23(3):724-730.

鲁作民,蒲锦春.小叶杨幼苗土壤干旱锻炼的研究[J].林业科学,1982,18(2):10.

卢景龙.山西北部风沙区主要防护林树种选择探讨[J].山西林业科技,2010,39(1):46-48.

王超,王冬梅,李永红,等.能源树种文冠果在黄土残垣沟壑区引种试验的初步研究[J].北京林业大学学报,2013,35(3):90-96.

劳同浩,姜俊红,李就好,等.南雄烟区土壤田间持水量测定对比试验研究[J].资源与环境科学,2013,(1):208-209.

Gindaba J, Rozanov A, Negash L. Response of seedlings of two Eucalyptus and three deciduous tree species from Ethiopia to severe water stress[J]. Forest Ecology and Management, 2004,201(1):119-129.

韩希英,宋凤斌.干旱胁迫对玉米根系生长及根际养分的影响[J].水土保持学报,2006,20(3):170-172.

黄彩变,曾凡江,雷加强,等.灌溉对沙拐枣幼苗生长及氮素利用的影响[J].生态学报,2014,34(3):5-15.

唐玉婧,马猛,邓西平,等.干旱胁迫下小麦抗旱能力与根系特征间的关系[J].西北农林科技大学学报:自然科学版,2014,4(12):1-7.

邸楠,席本野,Jeremiah R P,,等.宽窄行栽植下三倍体毛白杨根系生物量分布及其对土壤养分因子的响应[J].植物生态学报,2013,37(10):961-971.

Lawlor D W, Cornic G. Photosynthetic carbon assimilation and associated metabolism in relation to water deficits in higher plants[J]. Plant,Cell and Environment, 2002,25(2):275-294.

郭海军.山西北部风沙区小叶杨低产(效)成过熟林更新针叶树模式探讨[J].内蒙古林业调查设计,2010,33(6):55-56.

王金胜,郭栋生,丁起盛,等.水分胁迫对玉米幼苗几种生理生化指标的影响及其抗旱性的关系[J].山东农业大学学报,1992,12(2):137-140.

Sharp R E, Poroyko V, Hejlek L G, et al. Root growth maintenance during water deficits:Physiology to functional genomics[J]. Journal of Experimental Botany, 2004,55(407):2343-2351.

高世斌,冯质雷,李晚忱,等.干旱胁迫下玉米根系性状和产量的QTLs分析[J].作物学报,2005,31(6):718-722.

Steudle E. Water uptake by plant roots:An integration of views[J]. Plant and Soil, 2000,226(1):45-56.

孙龙,彭祚登,王冲,等.干旱胁迫对两种沙地灌木能源树种光合特性的影响[J].南京林业大学学报,2014,38(2):99-104.

文志,王丽,王效科,等. O

和干旱胁迫对元宝枫叶片气孔特征的复合影响[J].生态学杂志,2014,33(3):560-566.

刘帅华,贺康宁,秦景,等. NaCl胁迫下银水牛果光响应的研究[J].干旱区资源与环境,2012,7(26):145-149.

浏览量

1406

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

高压电场对毛乌素沙地两种优势植物抗旱性的影响

干旱胁迫对沙枣幼苗根茎叶生长及光合色素的影响

干旱胁迫下常春藤净光合速率日变化及其影响因子分析

苦豆子和苦马豆种子萌发对干旱胁迫的响应特征

复合缓释保水保肥材料对苗木生长的影响