Hydroponic Wrapper Nutrient Composition for Yield and Leaf Strength
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Solution Overview
Problem
The current facility-based cultivation of wrapper tobacco leaves suffers from poor yield and poor leaf tensile force due to insufficient nutrient management.
Innovation Solution
A method involving a nutrient solution cultivation system using modulated medium and trace element nutrient solutions, including specific concentrations of boric acid, manganese salt, calcium salt, magnesium salt, and ferric salt, applied in different growth stages of wrapper cultivation to improve yield and leaf tensile force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If facility-based cultivation is used to control ecological conditions, then the controllability of nutrient management is improved, but the yield and leaf tensile force deteriorate due to insufficient nutrient management
Solution Approach 1:
The patent applies parameter changes by precisely adjusting the concentrations of multiple nutrient elements in the hydroponic solution. Specifically, it optimizes calcium (310-690 mg/L), magnesium (400-1300 mg/L), iron (40-250 mg/L), boron (65-420 μg/L), and manganese (230-1600 μg/L) concentrations to simultaneously achieve high controllability and improved yield with enhanced leaf tensile force.
Solution Approach 2:
The patent uses a composite nutrient solution containing multiple medium and trace elements working together. This composite approach combines calcium salt, magnesium salt, ferric salt, boric acid, and manganese salt in specific proportions to create a synergistic effect that resolves the contradiction between controllability and productivity.
2Device complexity
If traditional field nutrient management is used, then the complexity of management is reduced, but the controllability of nutrient variables deteriorates due to uncontrollable environmental factors
Solution Approach 1:
The patent replaces traditional field-based mechanical cultivation with a hydroponic system that uses controlled nutrient solution delivery. This substitution eliminates soil-related uncontrollable factors while maintaining manageable system complexity through standardized nutrient formulation and delivery mechanisms.
3Manufacturing precision
If high-quality wrapper standards are pursued with thin leaves and fine veins, then the industrial usability is improved, but the production difficulty increases due to stringent ecological requirements
Solution Approach 1:
The patent achieves high-quality wrapper characteristics by precisely controlling nutrient parameters in the hydroponic system. The optimized concentrations of calcium, magnesium, iron, boron, and manganese create ideal conditions for developing thin leaves with fine veins while maintaining strong tensile force, thereby improving manufacturing precision without excessively increasing production complexity.
Data Source
AI summary
The invention discloses an application method of medium and trace nutrient elements for wrapper hydroponic system. The application method includes the following steps: providing a nutrient solution cultivation system as well as medium and trace element nutrient solutions for facility-based cultivation of wrapper; the medium and trace element nutrient solutions are applied in the cultivation of wrapper; wherein the medium and trace element nutrient solutions contain modulated components, 65-420 ug/L boric acid and 230-1600 ug/L manganese salt, the modulated components contain at least two of 310-690 mg/L calcium salt, 400-1300 mg/L magnesium salt and 40-250 mg/L ferric salt. The present invention can obviously improve yield, appearance quality and leaf tensile force of the wrapper by applying the nutrient solution with specific components in different stage of the wrapper cultivation, respectively, thereby greatly improving the industrial availability of the wrapper raw materials.