喷钙对芍药花茎品质及叶片光合特性的影响

生态学杂志 ›› 2012, Vol. 31 ›› Issue (11): 2817-2822.

喷钙对芍药花茎品质及叶片光合特性的影响

李成忠^1,2,陶俊^1**,孙燕²,孔芬¹,耿庆萍¹,杜蓓¹

(¹扬州大学园艺与植物保护学院，江苏扬州 225009； ²扬州环境资源职业技术学院园林园艺系，江苏扬州 225127)

出版日期:2012-11-10 发布日期:2012-11-10

Effects of spraying calcium on the inflorescence stem quality and leaf photosynthesis of herbaceous peony (Paeonia lactiflora Pall.).

LI Cheng-zhong^1,2, TAO Jun^1**, SUN Yan², KONG Fen¹, GENG Qing-ping¹, DU Bei¹

(¹College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, Jiangsu, China; ²Department of Landscape Architecture and Horticulture, Yangzhou Vocational College of Environment and Resources, Yangzhou 225127, Jiangsu, China)

Online:2012-11-10 Published:2012-11-10

摘要/Abstract

摘要： 以5年生芍药盆栽苗为试材，研究了喷钙措施对芍药花茎品质、花茎机械强度及叶片光合参数的影响。结果表明，喷钙处理（4%，w/v）显著提高了花茎的机械强度，增幅达24.3%，花茎中纤维素、半纤维素、木质素及果胶含量均较对照显著增加，其中纤维素含量为456.54 μg·g^-1，较对照增加了28.5%，增幅最大。喷钙处理还使芍药叶片净光合速率(P_n)、气孔导度(G_s)、蒸腾速率(T_r)和水分利用效率(WUE)增加，至处理28 d时，P_n为17.07 μmol·m^-2·s^-1，较对照增加29.6%，G_s较对照提高了55%，为0.31 mol·m^-2·s^-1，T_r较对照提高了20%，达到2.61 mmol·mol^-1，WUE为6.54 mmol·mol^-1，较对照增加7.6%。另外，喷钙使芍药叶片最大净光合速率(P_max)达到20.71 μmol·m^-2·s^-1，较对照提高24.6%，光饱和点为902.5 μmol·m^-2·s^-1，较对照增加7.5%，而光补偿点则显著降低，为7.27 μmol·m^-2·s^-1，较对照降低34.5%。

关键词: 克里格插值, 黄泛区, 土壤磷, 半方差函数, 空间变异

Abstract: Taking 5-year old herbaceous peony (Paeonia lactiflora Pall.) as test material, a pot experiment was conducted to study the effects of spraying calcium (4%, w/v) on the inflorescence stem quality and leaf photosynthetic characteristics of the plant. Under the spraying of calcium, the mechanical strength of the inflorescence stem increased significantly by 24.3%, and the cellulose, semicellulose, lignin, and pectin contents in the inflorescence stem all increased significantly, among which, the cellulose content reached 456.54 μg·g^-1 and enhanced by 28.5%, as compared with the control. The leaf net photosynthetic rate (P_n), stomatal conductance (G_s), transpiration rate (T_r), and water use efficiency also increased, with the P_n up to 17.07 μmol·m^-2·s^-1 28 days after calcium application and enhanced by 29.6%, and the G_s, T_r and WUE enhanced by 55%, 20%, and 7.6%, respectively, as compared with the control. In addition, spraying calcium led to an increase of the maximum net photosynthetic rate (P_max) and the light saturation point, which were up to 20.71 μmol·m^-2·s^-1 and 902.5 μmol·m^-2·s^-1 and enhanced by 24.6% and 7.5%, respectively, but led to a significant decrease of light compensation point, which was 7.27 μmol·m^-2·s^-1 and decreased by 34.5%.

Key words: semivariance function, flooded area of the Yellow River, soil phosphorus, Kriging interpolation, spatial variation.

李成忠1,2,陶俊1**,孙燕2,孔芬1,耿庆萍1,杜蓓1. 喷钙对芍药花茎品质及叶片光合特性的影响[J]. 生态学杂志, 2012, 31(11): 2817-2822.

LI Cheng-zhong1,2, TAO Jun1**, SUN Yan2, KONG Fen1, GENG Qing-ping1, DU Bei1. Effects of spraying calcium on the inflorescence stem quality and leaf photosynthesis of herbaceous peony (Paeonia lactiflora Pall.).[J]. cje, 2012, 31(11): 2817-2822.

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