湖北农业科学 ›› 2022, Vol. 61 ›› Issue (24): 90-94.doi: 10.14088/j.cnki.issn0439-8114.2022.24.020

• 园艺·特产 • 上一篇    下一篇

不同施肥处理对金钗石斛光合特性的影响

郑治洪1, 邵先强2, 邱志龙2, 黎启高2, 刘剑东3   

  1. 1.贵州省农作物品种资源研究所,贵阳 550006;
    2.德江县科学技术服务中心,贵州 德江 565200;
    3.贵州省亚热带作物研究所,贵州 兴义 562400
  • 收稿日期:2021-06-16 出版日期:2022-12-25 发布日期:2023-01-18
  • 作者简介:郑治洪(1973-),男,贵州德江人,农艺师,主要从事农作物品种资源的研究工作,(电话)13595086540(电子信箱)438853642@qq.com。

Effects of different fertilization treatments on photosynthetic characteristics of Dendrobium nobile

ZHENG Zhi-hong1, SHAO Xian-qiang2, QIU Zhi-long2, LI Qi-gao2, LIU Jian-dong3   

  1. 1. Institute of Crop Germplasm Resources, Guiyang 550006,China;
    2. Dejiang County Science and Technology Service Center,Dejiang 565200,Guizhou,China;
    3. Guizhou Subtropical Crop Institute, Xingyi 562400,Guizhou,China
  • Received:2021-06-16 Online:2022-12-25 Published:2023-01-18

摘要: 以贵州省赤水市金钗石斛(Dendrobium nobile Lindl)苗为试验材料,通过不同施肥处理进行单因素分析和正交试验,采用Li-6400型便携式光合作用测量系统(Li-Cor,USA),对金钗石斛光合特性的有关参数进行测试。结果表明,施用Hoaglan营养液能有效改善金钗石斛的净光合速率,光合速率的快慢与金钗石斛气孔导度呈正相关,气孔导度日变化与蒸腾速率日变化有直接关系,所有因子中钾肥对净光合速率、蒸腾速率影响较大,均达显著水平,而影响气孔导度的是氮肥,生产中应合理施用钾肥、氮肥。

关键词: 金钗石斛(Dendrobium nobile Lindl), 光合特性, 日变化, 施肥

Abstract: Using Dendrobium nobile seedlings from Chishui City of Guizhou Province as experimental materials, univariate analysis and orthogonal experiment were carried out under different fertilization treatments. The photosynthetic characteristics of Dendrobium nobile were tested using Li-6400 portable photosynthesis measurement system (Li-Cor,USA). The results showed that the application of Hoaglan nutrient solution could effectively improve the net photosynthetic rate of Dendrobium nobile. The speed of the photosynthetic rate was positively related to the stomatal conductance of Dendrobium nobile, and the daily variation of stomatal conductance was directly related to the daily variation of the transpiration rate. Among all factors, potassium fertilizer had a greater impact on the net photosynthetic rate and transpiration rate, reaching a significant level, while nitrogen fertilizer affected the stomatal conductance. Potassium fertilizer and nitrogen fertilizer should be applied rationally in production.

Key words: Dendrobium nobile Lindl, photosynthetic characteristics, diurnal variation, fertilization

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