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中国农学通报 ›› 2021, Vol. 37 ›› Issue (22): 57-62.doi: 10.11924/j.issn.1000-6850.casb2020-0478

所属专题: 园艺

• 林学·园艺·园林 • 上一篇    下一篇

树冠覆膜对沙糖橘光合作用及果实品质的影响

范七君1,2(), 陈传武1, 刘萍1, 牛英1,2, 唐艳1, 邓崇岭1,2()   

  1. 1广西特色作物研究院/广西柑桔育种与栽培工程技术研究中心,广西桂林 541004
    2广西临桂晚熟柑橘试验站,广西桂林 541004
  • 收稿日期:2020-09-21 修回日期:2021-05-26 出版日期:2021-08-05 发布日期:2021-08-26
  • 通讯作者: 邓崇岭
  • 作者简介:范七君,男,1982年出生,湖北襄阳人,助理研究员,博士,研究方向为柑橘栽培生理。通信地址:541004 广西桂林市普陀路40号 广西特色作物研究院实验室,Tel:0773-5812349,E-mail: hapy7@126.com
  • 基金资助:
    国家重点研发计划项目“沿海西江流域柑橘优质高效品种筛选及配套栽培技术”(2019YFD1001402-HX01);广西特色作物试验站项目“广西临桂晚熟柑橘试验站”(桂TS202110);财政部和农业农村部国家现代农业产业技术体系项目;广西柑橘生物学重点实验室项目“金弹花芽分化过程中一氧化氮变化规律研究(续)”(SYS2016X001)

Influence of Canopy Film-covering on Photosynthesis and Fruit Quality of Citrus reticulata ‘Shiyueju’

Fan Qijun1,2(), Chen Chuanwu1, Liu Ping1, Niu Ying1,2, Tang Yan1, Deng Chongling1,2()   

  1. 1Guangxi Academy of Specialty Crops/ Guangxi Engineering Research Center of Citrus Breeding and Culture, Guilin Guangxi 541004
    2Guangxi Lingui Experimental Station of Late-maturing Citrus, Guilin Guangxi 541004
  • Received:2020-09-21 Revised:2021-05-26 Online:2021-08-05 Published:2021-08-26
  • Contact: Deng Chongling

摘要:

为探讨树冠覆膜对沙糖橘树冠环境、光合作用和果实品质的影响,以沙糖橘为试验材料,树冠覆膜为处理、不覆膜为对照,分别记录树冠的温度、湿度和光照强度等环境因子指标,测定叶片的净光合速率、气孔导度、蒸腾速率和胞间二氧化碳浓度等光合作用指标,分析果实的可溶性固形物、总糖、可滴定酸及维生素C等品质指标。与对照相比,树冠覆膜后,总体上沙糖橘树冠白天的光照强度和湿度降低,降幅分别为36.36%~63.64%和5.25%~7.56%,月均温度和月均昼夜温差增加,最大分别增加1.21℃和3.88℃,净光合速率下降,最大降幅45.95%;果实的可溶性固形物、总糖及糖酸比等果实品质指标显著提高,分别增加7.81%、23.46%和4.87%。树冠覆膜在延长沙糖橘采收期的同时,总体上保持了较好的果实品质。

关键词: 沙糖橘, 光合特性, 果实品质, 树冠覆膜, 温湿度, 光照强度

Abstract:

To study the influence of the canopy film-covering on canopy environment, photosynthesis and fruit quality in Citrus reticulata ‘Shiyueju’, the temperature, humidity, and light intensity in the canopy of both the trees with (treatment) or without (control) canopy film-covering were measured, as well as the leaf photosynthetic parameters including net photosynthetic rate, stomatal conductance, transpiration rate, intercellular carbon dioxide and etc., likewise, the contents of total soluble solids(TSS), total sugar (TS), titratable acid (TA) and vitamin C (Vc) in fruits were also measured. Compared with the control, the light intensity and humidity was generally decreased in daytime under canopy film-covering and the decrease was from 36.36% to 63.64% and 5.25% to 7.56%, respectively; the monthly average temperature and diurnal temperature variation of the canopy film-covering trees were increased and the maximum increase was 1.21℃ and 3.88℃, respectively; the net photosynthetic rate of the trees with canopy film-covering was decreased and the maximum decrease was 45.95%; the canopy film-covering trees had a significant higher total soluble solids(TSS), total sugar (TS) and TS/TA and the increase was 7.81%, 23.46% and 4.87%, respectively. Canopy film-covering could maintain better fruit quality and prolong the harvest time of C. reticulata ‘Shiyueju’.

Key words: Citrus reticulata ‘Shiyueju’, photosynthetic characters, fruit quality, canopy film-covering, temperature and humidity, light intensity

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