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Establishment of a Model and System for Secondary Fertilization of Nutrient Solution and Residual Liquid

Author

Listed:
  • Xinzhong Wang

    (School of Agriculture Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Weiquan Fang

    (School of Agriculture Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Zhongfeng Zhao

    (School of Agriculture Engineering, Jiangsu University, Zhenjiang 212013, China)

Abstract

At present, the nutrient solution of soilless culture is mostly configured by simply using the standard fertilizer formula, lacking the precise matching technology of nutrient solutions based on nutrient elements. It is unable to change the formula configuration according to vegetable types, different growth stages and growth needs, especially in the secondary fertilizer reuse of nutrient solution reflux. In order to make precise secondary fertilization, a model and system for secondary fertilization of nutrient solution residual liquid were established in this paper. It can be used for secondary fertilization based on nutrient ions and reused after the sterilization of the residual liquid. A nutrient solution fertilizer system based on nutrient elements was designed. The nutrient solution fertilizer system based on the online detection of ions was determined with different element compounds as the fertilizer unit. Combined with the existing hydroponic water-soluble inorganic salts, the ion concentration and its proportioning quantitative model of the nutrient solution recovery solution were established. The experimental verification and result analysis of the fertilizer model were carried out to test the accuracy and practicability of the established model. The ion concentration error obtained from the mathematical model was established as 0.0093–0.5294 mg · L − 1 .The precise proportioning technology of nutrient solution based on nutrient elements can realize the precise and intelligent proportioning of nutrient elements in the nutrient solution of crops and can also make full use of the nutrient solution. It also improves the efficiency of greenhouse cultivation.

Suggested Citation

  • Xinzhong Wang & Weiquan Fang & Zhongfeng Zhao, 2023. "Establishment of a Model and System for Secondary Fertilization of Nutrient Solution and Residual Liquid," Sustainability, MDPI, vol. 15(3), pages 1-14, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:3:p:1851-:d:1039967
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    References listed on IDEAS

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    1. Chen, Jiaoliao & Xu, Fang & Tan, Dapeng & Shen, Zheng & Zhang, Libin & Ai, Qinglin, 2015. "A control method for agricultural greenhouses heating based on computational fluid dynamics and energy prediction model," Applied Energy, Elsevier, vol. 141(C), pages 106-118.
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