HOU Saisai,XUE Zhanjun,ZHANG Yixing,et al.Changes of Photosynthesis and Chlorophyll Fluorescence Parameters of Chinese Cabbage Under Different Phosphorus Supply Levels[J].Northern Horticulture,2023,(19):8-15.[doi:10.11937/bfyy.20225229]
不同供磷水平下大白菜的光合作用及叶绿素荧光参数变化
- Title:
- Changes of Photosynthesis and Chlorophyll Fluorescence Parameters of Chinese Cabbage Under Different Phosphorus Supply Levels
- 文章编号:
- 1001-0009(2023)19-0008-08
- 关键词:
- 磷; 大白菜; 光合作用; 叶绿素荧光; Logistic回归拟合
- Keywords:
- phosphorus; Chinese cabbage; photosynthesis; chlorophyll fluorescence; Logistic regression fitting
- 分类号:
- S 634.1
- 文献标志码:
- A
- 摘要:
- 以大白菜(Brassica rapa)为试材,采用室内盆栽试验的方式,采用磷(P)水平为0、25、5、10、25、50、100、150、300、600、900、1 200 mg·kg-1处理大白菜,种植37 d后收获幼苗以分析不同供磷水平条件下,大白菜生长、光合气体交换和叶绿素荧光参数等指标的变化,以期获取大白菜光合特性对磷供应的响应规律,为大白菜种植中合理施用磷肥提供参考依据。结果表明:供磷水平显著影响大白菜生长、光合气体交换和叶绿素荧光特性。大白菜株高、茎粗、光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)和胞间CO2浓度(Ci)均随供磷水平先增加而逐渐趋于平衡,拟合R2范围为0.76~0.98;但不同的叶绿素荧光参数随供磷水平增加呈现不同的趋势。适宜的供磷水平促进了大白菜生长,增加了光合作用,改善了光合特性。
- Abstract:
- The Chinese cabbage (Brassica rapa) was used as test material,the effects of phosphorus (P) supply level on growth,photosynthetic gas exchange and chlorophyll fluorescence characteristics of Chinese cabbage seedlings were investigated by means of indoor pot experiment.The seedlings were treated with 0,25,5,10,25,50,100,150,300,600,900,1 200 P mg·kg-1.After 37 days of planting,the changes of growth,photosynthetic gas exchange and chlorophyll fluorescence parameters of Chinese cabbage were analyzed,in order to obtain the response rule of photosynthetic characteristics of Chinese cabbage to phosphorus supply,and provide reference for rational application of phosphorus fertilizer in Chinese cabbage planting.The results showed that the phosphorus supply level significantly affected the growth,photosynthetic gas exchange and chlorophyll fluorescence characteristics of Chinese cabbage.Plant height,stem diameter,photosynthetic rate (Pn),transpiration rate (Tr),stomatal conductance (Gs),intercellular CO2 concentration (Ci) and other fluorescence parameters of Chinese cabbage gradually tended to balance with the increase of P supply level first,the fitted R2 ranged from 0.76-0.98.But different chlorophyll fluorescence parameters showed different trends with the increase of phosphorus supply level.The suitable phosphorus supply level promoted the growth of Chinese cabbage,increased the photosynthesis and improved the photosynthetic characteristics.
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备注/Memo
第一作者简介:侯赛赛(1998-),女,硕士研究生,研究方向为资源利用与植物保护。E-mail:hss11022021@163.com.责任作者:王鑫鑫(1984-),男,博士,副研究员,硕士生导师,现主要从事土壤-植物反馈和农业生态等研究工作。E-mail:sywxx@hebau.edu.cn.基金项目:河北省现代农业产业技术体系资助项目(HBCT2021030214)。收稿日期:2023-04-08