氮磷添加对何首乌生长和叶绿素荧光参数的影响

doi:10.19303/j.issn.1008-0384.2019.02.004

摘要/Abstract

摘要： [目的] 研究不同氮磷添加处理对何首乌植株生长和叶绿素荧光参数的影响，为促进何首乌生产提供科学施肥的理论指导。[方法] 以何首乌幼苗为试材，设置4个处理，分别为对照（CK）、施氮（N：株施尿素2.7 g）、施磷（P：株施过磷酸钙14.4 g）、氮磷共施（N+P：株施尿素2.7 g、过磷酸钙14.4 g），测定不同氮磷添加处理对何首乌生长和叶绿素荧光参数的影响。[结果] 氮磷添加处理可促进何首乌生长，对何首乌叶片数、单叶面积、叶柄长、株高的影响程度为：氮磷共施 > 施磷 > 施氮 > 对照；与对照相比，氮磷添加处理均可显著促进何首乌生物量积累，以氮磷共施处理增幅最大，并可显著提高地上生物量占比；氮磷添加处理促进了何首乌叶绿素含量增加，以及Fv/Fm、qP、ETR值升高，降低qN值，以氮磷共施处理的叶绿素含量增幅最大（较对照增加96.08%），qN值降幅最大（较对照降低29.16%）。[结论] 相较于对照及单一养分添加，氮磷共施处理能更显著提高何首乌光合效率，促进植株生长。

关键词: 何首乌, 氮磷添加, 生长, 叶绿素荧光参数

Abstract: [Objective] Effects of N and P additions on the growth and chlorophyll fluorescence indices of Polygonum multiflorum were studied to provide a guideline for proper fertilization to promote the plant growth. [Method] N and P addition, i.e., (1) N application using 2.7g urea/plant, (2) P application using 14.4g superphosphate/plant, (3) N+P application using 2.7 g urea and 14.4 g superphosphate on each plant, or (4) control without added N or P, was incorporated in the potting soil to observe the resulting growth and chlorophyll fluorescence indices of the plants. [Result] The treatments increased the leaf count, single leaf area, petiole length, and height of the plants in the order of N+P application > P application > N application > control. The addition of N+P significantly increased the biomass accumulation, proportion of above-ground biomass, and chlorophyll content as well as the indices of Fv/Fm, qP and ETR, with a decreased qN. Compared to control, N+P treatment affected the most on chlorophyll with a 96.08% increase and on qN with a 29.16% reduction. [Conclusion] Addition of both N and P in the potting soil significantly promoted the growth and photosynthesis of P. multiflorum.

Key words: Polygonum multiflorum, nitrogen and phosphorus addition, growth, chlorophyll fluorescence indices

中图分类号:

S567.21

刘筱, 韩燕峰, 杨淑君, 姬拉拉, 王锐洁, 江学海, 王健健. 氮磷添加对何首乌生长和叶绿素荧光参数的影响[J]. 福建农业学报, 2019, 34(2): 162-169.

LIU Xiao, HAN Yan-feng, YANG Shu-jun, JI La-la, WANG Rui-jie, JIANG Xue-hai, WANG Jian-jian. Effects of Nitrogen and Phosphorus Additions on Growth and Chlorophyll Fluorescence Indices of Polygonum multiflorum[J]. Fujian Journal of Agricultural Sciences, 2019, 34(2): 162-169.

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