辽东栎幼苗光合生理生态特性对施氮响应的初步研究

›› 2013, Vol. 21 ›› Issue (1): 100-108.

辽东栎幼苗光合生理生态特性对施氮响应的初步研究

白宏兵^1,2, 吴发启¹, 程伟^2,3

1. 西北农林科技大学资源环境学院, 陕西杨凌 712100;
2. 河北北方学院经管学院, 河北张家口 075000;
3. 中国延安干部学院, 陕西延安 716000

收稿日期:2012-08-17 修回日期:2012-10-11 出版日期:2013-02-15 发布日期:2013-02-27
通讯作者: 吴发启
作者简介:白宏兵(1977-),男,陕西富平人,博士研究生,研究方向为流域管理,E-mail:183547127@qq.com;
基金资助:
黄土高原农果牧复合循环技术集成与示范(2012BADB00)资助

Response of Photosynthetic Physioecological Characteristics of Quercus liaotungensis Seedlings to Nitrogen Fertilizer

BAI Hong-bing^1,2, WU Fa-qi¹, CHENG Wei^2,3

1. College of Environment and Resources, Northwest A&F University, Yangling, Shaaixi Province 712100, China;
2. Hebei North University, Zhangjiakou, Hebei Province 075000, China;
3. Yan’an Executive Leadership Academy of China, Yan’an, Shannxi Province 716000, China

Received:2012-08-17 Revised:2012-10-11 Online:2013-02-15 Published:2013-02-27

摘要/Abstract

摘要： 采用盆栽控制试验研究0.05,0.10,0.15,0.20 g·kg^-1施氮处理对2年生辽东栎(Quercus liaotungensis)幼苗光合生理特征的影响,以期为黄土高原生态环境建设工程的可持续发展提供科学依据。结果表明:施氮对其幼苗的生长及光合产物的分配产生显著影响。适量施氮可促进幼苗生物量增加,一定程度上改善了幼苗生长不良的现象;施氮可提高其幼苗净光合速率(P_n),延长光合作用的旺盛期,其中0.1 g·kg^-1施氮处理下P_n峰值在6-8月比对照分别提高16.62%,23.35%和25.43%;幼苗P_n日变化在6月和8月呈单峰曲线,7月呈双峰曲线,这与气孔因素造成的光合"午休"现象有关;影响光合速率的因素中,胞间CO₂浓度(C_i)对辽东栎P_n影响最大。这可能是因为施氮影响叶片氮含量和硝酸还原酶活性,影响辽东栎叶片内源ABA水平,调节气孔开闭,从而调节C_i,最终影响其P_n。

关键词: 辽东栎, 光合特性, 施氮

Abstract: The effect of applying nitrogen on the photosynthetic characteristics of two-year Quercus liaotungensis seedlings results showed that applying nitrogen had significant effects on the growth and photosythetic product distribution of Quercus liaotungensis seedlings. Proper nitrogen level could increase the total biomass and promote the growth of above-ground part. Nitrogen could significantly increase the net photosynthetic rate (P_n) of Quercus liaotungensis and expand the period of vigorous growth. The P_ns of treatment N10 were 16.62%, 23.35%, 25.43% in June, July and August that were higher than that of CK. Daily P_n curves had single-peaks in June and August, whereas curves had double-peaks in July. This phenomenon was related to "photosynthesis midday depression". The major factor that affected P_n was the concentration of intercellular CO₂. Nitrogen application might influence the concentration of leaf nitrogen content and the activity of nitrate reductase which affects ABA contents and ultimately causes P_n variation of Quercus liaotungensis seedlings.

Key words: Applying nitrogen, Photosynthesis character, Quercus liaotungensis

中图分类号:

白宏兵, 吴发启, 程伟. 辽东栎幼苗光合生理生态特性对施氮响应的初步研究[J]. , 2013, 21(1): 100-108.

BAI Hong-bing, WU Fa-qi, CHENG Wei. Response of Photosynthetic Physioecological Characteristics of Quercus liaotungensis Seedlings to Nitrogen Fertilizer[J]. , 2013, 21(1): 100-108.

参考文献

[1] 侯庆春,韩蕊莲,韩仕锋. 黄土高原人工林草地"土壤干层"问题初探[J]. 中国水土保持,1999(5):11-14
[2] 王力,邵明安,王全九,等. 黄土区土壤干化研究进展[J]. 农业工程学报,2004,20(5):27-31
[3] 吴钦孝,杨文治. 黄土高原植被建设与持续发展[M]. 北京:科学出版社,1998:34-45
[4] 王正秋. 黄土高原造林中几个问题的思考[J].中国水土保持,2000(4):37-39
[5] 谢国阳,杨细明,许冰峰,等. 连载杉木施肥生理评价指标研究[J]. 福建林学院学报,2000,20(2):147-149
[6] 吉艳芝,陈立新,冯万忠. 施肥对落叶松人工林的生长量和光合特性的影响[J]. 河北农业大学学报,2004,27(3):45-48
[7] 王翼龙. 黄土高原半干旱区两典型林分主要树种光合耗水特性及影响因素研究[D]. 北京:中国科学院研究生院,2010:41-55
[8] 李扬,黄建辉. 库布齐沙漠中甘草对不同水分和养分供应的光合生理响应[J]. 植物生态学报,2009,33(6):1112-1124
[9] 阎秀峰,王琴. 接种外生菌根对辽东栎幼苗生长的影响[J]. 植物生态学报,2002,26(6):701-707
[10] 阎秀峰,王琴. 两种外生菌根真菌在辽东栎幼苗上的混合接种效应[J]. 植物生态学报,2004,28(1):17-23
[11] 许大全. 光合作用效率[M]. 上海: 上海科学技术出版社,2002:62-89
[12] 陈根云,俞冠路,陈悦,等. 光合作用对光和二氧化碳响应的观测方法探讨[J]. 植物生理与分子生物学学报,2006,32(6):691-696
[13] 郭焱,李保国. 虚拟植物的研究进展[J]. 科学通报,2001,46(4):273-280
[14] 孙书存,陈灵芝. 东灵山地区辽东栎叶的生长及其光合作用[J]. 生态学报,2000,20(2):212-217
[15] 蔺琛,马钦彦,韩海荣,等. 山西太岳山辽东栎的光合特性[J]. 生态学报,2002,22(9):1399-1406
[16] Farquhar G D, Sharkey T D. Stomatal conductance and photosynthesis[J]. Annual Review of Plant Physiology,1982,33(1):317-345
[17] Corpas F J, Barroso J B, Carreras A, et al. Cellular and subcellular localization of endogenous nitric oxide in young and senescent pea plants[J]. Plant Physiology,2004,136(1):2722-2733
[18] 张岁岐,山仑. 土壤干旱条件下氮素营养对玉米内源激素含量影响[J]. 应用生态学报,2003,14(9):1503-1506