Effects of Intelligent Irrigation on Photosynthetic Characteristics of Citrus Leaves and Fruit Quality

[Objectives] This study was conducted to improve the water use efficiency and fruit quâ...∂ty of citrus, and realize the automatic irrigation and standardized production in citrus orchards. [Methods] With Orah as the research object, the effects of intelligent irrigation management in citrus orchard...

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Bibliographic Details
Published inAgricultural biotechnology (Pawtucket, R.I.) Vol. 11; no. 4; pp. 36 - 42
Main Authors Huang, Taiqing, Huang, Yanfei, Lu, Dan, Liu, Yaoxin
Format Journal Article
LanguageEnglish
Published Cranston Wu Chu (USA-China) Science and Culture Media Corporation 01.08.2022
Subjects
Agricultural production
Ascorbic acid
Carbon dioxide
Carbon dioxide concentration
Chlorophyll
Citrus fruits
Conductance
Drought
Fertilizers
Food quality
Fruits
Irrigation
Leaves
Maturation
Orchards
Photosynthesis
Production methods
Rainy season
Stomata
Stomatal conductance
Transpiration
Water demand
Water management
Water use
Water use efficiency
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Summary:[Objectives] This study was conducted to improve the water use efficiency and fruit quâ...∂ty of citrus, and realize the automatic irrigation and standardized production in citrus orchards. [Methods] With Orah as the research object, the effects of intelligent irrigation management in citrus orchards on citrus leaf chlorophyll content, photosynthetic characteristics and fruit quality were investigated by comparing with conventional farmer management. [ Results ] The smart irrigation measure in citrus orchards significantly increased the SPAD value of leaves at the maturation stage of citrus, and simultaneously significantly improved the photosynthetic rate, transpiration rate and stomatal conductance at the flower bud differentiation stage, as well as the photosynthetic rate , transpiration rate, stomatal conductance and intercellular CO2 concentration at the maturation stage. However, the effects on the photosynthetic characteristic indexes in the rainy season were not significant. Compared with conventional experience management, the smart irrigation management measure of citrus orchards increased the edible rate and juice rate of citrus by 4. 53 and 3. 69 percentage points, respectively, and increased soluble solids, total sugar, vitamin C and sugar-acid ratio by 16. 75% , 20. 86% , 24. 10% and 13.17% , respectively. [ Conclusions] The smart irrigation management fully met the water demand for citrus growth due to timely irrigation, significantly improved the photosynthesis indicators of citrus leaves during drought, and significantly improved the quality of citrus.
ISSN:2164-4993