供磷水平对一串红橙香公主生长及根系发育的影响

doi:10.3969/j.issn.1004-1524.2018.03.05

浙江农业学报 ›› 2018, Vol. 30 ›› Issue (3): 386-392.DOI: 10.3969/j.issn.1004-1524.2018.03.05

供磷水平对一串红橙香公主生长及根系发育的影响

佟静^1,2, 李素艳^1,*, 孙向阳¹, 刘克锋², 王宏伟², 杨美燕³

1.北京林业大学林学院, 北京 100083;
2.北京农学院城乡发展学院, 北京 102206;
3.杭州市旅游职业学校园林专业部,浙江杭州 310052

收稿日期:2017-06-25 出版日期:2018-03-20 发布日期:2018-03-21
通讯作者: *李素艳, E-mail: lisuyan@bjfu.edu.cn
作者简介:佟静(1986—),女, 安徽亳州人,博士, 主要从事园林植物栽培生理相关研究工作。 E-mail: Tongj@bjfu.edu.cn
基金资助:
国家林业公益性行业科研专项(201504205);北京市园林绿化局2014年北京地区花卉生产优势品种育种研发与示范项目(YLHH201400115);北京世界园艺博览会事务协调局园艺类项目(京世园合同〔2015〕第0184号)

Effects of phosphorus fertilizing on growth and root morphology of Salvia splendens var. Chengxiang Gongzhu

TONG Jing^1,2, LI Suyan^1,*, SUN Xiangyang¹, LIU Kefeng², WANG Hongwei², YANG Meiyan³

1. College of Forestry, Beijing Forestry University, Beijing 100083, China;
2. Urban and Rural Development College, Beijing University of Agriculture, Beijing 102206, China;
3. Landscape Architecture Section, Hangzhou Tourism Vocational School, Hangzhou 310052, China

Received:2017-06-25 Online:2018-03-20 Published:2018-03-21

摘要/Abstract

摘要： 以典型园林植物一串红橙香公主为供试材料,研究不同磷营养液施用量对植株生长和根系形态的影响,营养液供磷水平依次为0(P₀)、15(P₁) 、30(P₂)、60(P₃)、90(P₄)、120(P₅) mg·L^-1。结果表明,供磷水平在0~120 mg·L^-1范围内,株高、冠幅、地径、叶面积、地上部分干物质质量、地下部分干物质质量、根体积和根平均直径随着磷浓度增加呈现出先升高后降低趋势,均在P₂处理达到最大值。叶绿素a和叶绿素总量均在P₁处理达到最大值,P₁处理叶绿素含量与其他各处理差异显著(P<0.05)。根长随着供磷浓度增加而增加,P₅处理达到最大值。P₀处理生长指标、叶绿素含量和根系各指标均最小,且发育延迟。综上说明供磷水平过低或者过高均不利于植株生长,在15~30 mg·L^-1橙香公主观赏效果最佳,是最适合磷浓度范围。

关键词: 橙香公主, 磷水平, 植物生长, 根系形态

Abstract: Salvia splendens var. Chengxiang Gongzhu was supposed as typical garden plant, different phosphorus nutrition solution levels were employed to study their effects on the growth and root morphology of the plants. Six phosphorus concentration levels of 0, 15, 30, 60, 90 and 120 mg·L^-1(named as P₀, P₁, P₂, P₃, P₄, P₅) were applied respectively. The results showed that with the increase of phosphorus application, plant height, crown diameter, ground diameter, leaf area, shoot and root dry weight, total root volume, and root average diameter firstly significantly increased and then dropped, which all reached a maximum in P₂ treatment. Chlorophyll a content and total chlorophyll content reached the highest in P₁ treatment, and showed significant difference compared with other treatments (P<0.05). As the concentration of P increased, total root length reached the maximum in P₅ treatment. The growth index, chlorophyll content and root characteristics in P₀ treatment were all the smallest, indicating the developmental delay. Based on this study, P concentration between 15-30 mg·L^-1 would be most suitable for the Salvia splendens var. Chengxiang Gongzhu.

Key words: Salvia splendens var. Chengxiang Gongzhu, phosphorus nutrient solution, vegetative growth, root morphology

中图分类号:

S681.4

佟静, 李素艳, 孙向阳, 刘克锋, 王宏伟, 杨美燕. 供磷水平对一串红橙香公主生长及根系发育的影响[J]. 浙江农业学报, 2018, 30(3): 386-392.

TONG Jing, LI Suyan, SUN Xiangyang, LIU Kefeng, WANG Hongwei, YANG Meiyan. Effects of phosphorus fertilizing on growth and root morphology of Salvia splendens var. Chengxiang Gongzhu[J]. , 2018, 30(3): 386-392.

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供磷水平对一串红橙香公主生长及根系发育的影响

Effects of phosphorus fertilizing on growth and root morphology of Salvia splendens var. Chengxiang Gongzhu

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