开放式空气二氧化碳浓度增高对小麦物质生产与分配的影响

应用生态学报

开放式空气二氧化碳浓度增高对小麦物质生产与分配的影响

杨连新¹;王余龙¹;李世峰¹;黄建晔¹;董桂春¹;朱建国²;刘钢²;韩勇²

¹扬州大学江苏省作物遗传生理重点实验室，江苏扬州 225009；
²中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室，南京 210008

收稿日期:2006-01-13 修回日期:2006-11-20 出版日期:2007-02-10 发布日期:2007-02-10

Effects of free-air CO₂ enrichment (FACE) on dry matter production and allocation in wheat

YANG Lian-xin¹; WANG Yu-long¹; LI Shi-feng¹; HUANG Jian-ye¹; DONG Gui-chun¹; ZHU Jian-guo²; LIU Gang²; HAN Yong²

¹Key Laboratory of Crop Genetics & Physiology of Jiangsu Province, Yangzhou University, Yangzhou
225009, Jiangsu, China;
²State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese
Academy of Sciences, Nanjing 210008, China

Received:2006-01-13 Revised:2006-11-20 Online:2007-02-10 Published:2007-02-10

摘要/Abstract

摘要： 2001—2003年，利用农田开放式空气CO₂浓度增高 (FACE) 技术平台，以冬小麦宁麦9号为供试材料，研究开放式条件下CO₂浓度增高对小麦整个生育期干物质生产与分配的影响.结果表明：与对照相比，FACE处理使小麦播种-越冬始期的干物质生产量略有增加（10.8%)，使越冬始期-拔节期、拔节期-孕穗期、孕穗期-抽穗期显著增加，分别增加了31.6%、40.5%、27.2%，使抽穗期-成熟期略有减少(-5.5%)，使成熟期生物产量显著增加(13.6%)；FACE处理对小麦播种-越冬始期的平均叶面积系数(LAI)和净同化率(NAR)均无显著影响，但使越冬始期-抽穗期LAI显著增加，NAR稍有增加，使抽穗期-抽穗后20 d NAR显著下降；FACE处理使不同生育时期叶片占全株质量的比例下降，而使茎鞘占全株质量的比例增加；FACE小麦抽穗期和成熟期茎鞘可溶性糖和淀粉含量及总量均明显增加.

关键词: 河流连续统特征, 香溪河, 附石藻类

Abstract: A free-air CO₂ enrichment (FACE) experiment was conducted in 2001—2003 to study the effects of predicted higher CO₂ levels on the dry matter (DM) production and allocation in win-ter wheat variety Ningmai 9. The results showed that under FACE, the DM production had an in-crease of 10.8%, 31.6%, 40.5% and27.2% during the growth periods from sowing to wintering (Period 1), wintering to jointing (Period 2), jointing to booting (Period 3), and booting to heading (Period 4), respectively, but a decrease of 5.5% in the period from heading to grain maturity (Period 5). As a result, the final total biomass at maturity was increased by 13.6%. FACE had no significant effect on leaf area index (LAI) and net assimilation rate (NAR) in Period 1, but made the LAI in Period 2 increased obviously, and the NAR decreased dramatically in Period 3. Under FACE, the proportion of leaf to total aboveground DM decreased, while that of stem (including sheath) to total above-ground DM showed an opposite trend in the whole growth period. The percentage and total amount of soluble sugar and starch in the stem at grain-filling stage were also increased obviously under FACE.

Key words: River continuum characteristics, Xiangxi River, Epilithic algae

杨连新¹;王余龙¹;李世峰¹;黄建晔¹;董桂春¹;朱建国²;刘钢²;韩勇². 开放式空气二氧化碳浓度增高对小麦物质生产与分配的影响[J]. 应用生态学报.

YANG Lian-xin¹; WANG Yu-long¹; LI Shi-feng¹; HUANG Jian-ye¹; DONG Gui-chun¹; ZHU Jian-guo²; LIU Gang²; HAN Yong² . Effects of free-air CO₂ enrichment (FACE) on dry matter production and allocation in wheat[J]. Chinese Journal of Applied Ecology.

[1]	张敏;徐耀阳;邵美玲;蔡庆华. 三峡水库香溪河库湾底泥中总氮、总磷含量的时空分布 [J]. 应用生态学报, 2009, 20(11): 2799-2805.
[2]	. 三峡水库香溪河库湾夏季藻类水华的时空动态及其影响因素 [J]. 应用生态学报, 2009, 20(08): 1940-1946.
[3]	蒋万祥^1,2;贾兴焕^1,3;周淑婵¹;李凤清¹;唐涛¹;蔡庆华¹. 香溪河大型底栖动物群落结构季节动态 [J]. 应用生态学报, 2009, 20(04): 923-928 .
[4]	蒋万祥^1,2;蔡庆华¹;唐涛¹;吴乃成¹;傅小城¹;李凤清¹;刘瑞秋¹. 香溪河大型底栖无脊椎动物空间分布 [J]. 应用生态学报, 2008, 19(11): 2443-2448 .
[5]	贾兴焕^1,2;吴乃成^1,2;唐涛¹;蔡庆华¹. 香溪河水系附石藻类的时空动态 [J]. 应用生态学报, 2008, 19(04): 881-886 .
[6]	吴乃成^1,2;唐涛¹;周淑婵^1,2;傅小城^1,2;蒋万祥^1,2;李凤清^1,2;蔡庆华¹. 香溪河小水电的梯级开发对浮游藻类的影响 [J]. 应用生态学报, 2007, 18(05): 1091-1096 .
[7]	唐涛, 黎道丰, 潘文斌, 渠晓东, 蔡庆华. 香溪河河流连续统特征研究 [J]. 应用生态学报, 2004, (1): 141-144.
[8]	唐涛, 黎道丰, 潘文斌, 渠晓东, 蔡庆华. 香溪河河流连续统特征研究 [J]. 应用生态学报, 2004, (1): 141-144.
[9]	唐涛[1] 黎道丰[1] 潘文斌[2]. 香溪河河流连续统特征研究 [J]. 应用生态学报, 2004, 15(01): 141-144 .
[10]	叶麟, 黎道丰, 唐涛, 渠晓东, 蔡庆华. 香溪河水质空间分布特性研究 [J]. 应用生态学报, 2003, (11): 1959-1962.
[11]	叶麟, 黎道丰, 唐涛, 渠晓东, 蔡庆华. 香溪河水质空间分布特性研究 [J]. 应用生态学报, 2003, (11): 1959-1962.
[12]	江明喜, 邓红兵, 蔡庆华. 神农架地区珍稀植物沿河岸带的分布格局及其保护意义 [J]. 应用生态学报, 2002, (11): 1373-1376.
[13]	江明喜, 邓红兵, 蔡庆华. 神农架地区珍稀植物沿河岸带的分布格局及其保护意义 [J]. 应用生态学报, 2002, (11): 1373-1376.
[14]	江明喜, 邓红兵, 唐涛, 蔡庆华. 香溪河流域河流中树叶分解速率的比较研究 [J]. 应用生态学报, 2002, (1): 27-30.
[15]	江明喜, 邓红兵, 唐涛, 蔡庆华. 香溪河流域河流中树叶分解速率的比较研究 [J]. 应用生态学报, 2002, (1): 27-30.