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A Hydroponic Co-cultivation System for Simultaneous and Systematic Analysis of Plant/Microbe Molecular Interactions and Signaling
Published on: July 22, 2017
Wheat Cultivation and Nutrient Control for the 180-day CELSS Integrated Experiment
Nan Zhang1, Jialian Li1, Jie Luo2
1Space Institute of Southern China (Shenzhen), Shenzhen 518117, China.
Life Sciences in Space Research
|July 29, 2020
Summary
Researchers identified wheat cultivar Wt04 as well-adapted for controlled ecological life support systems (CELSS), achieving high yield and radiation use efficiency. An optimized nutrient control pattern was developed for sustainable hydroponic cultivation in closed environments.
Area of Science:
- * Controlled Environment Agriculture
- * Hydroponics and Plant Physiology
Background:
- * Wheat cultivation is crucial for food, water, and oxygen regeneration in closed ecological systems.
- * Selecting well-adapted cultivars and optimizing nutrient management are key challenges for long-term space missions.
Purpose of the Study:
- * To identify the most suitable wheat cultivar for a controlled ecological life support system (CELSS).
- * To develop an optimal nutrient control strategy for hydroponic wheat cultivation within a CELSS.
Main Methods:
- * Cultivation of six wheat cultivars in recirculating hydroponic systems (HySy) within a 180-day CELSS experiment.
- * Real-time monitoring and control of nutrient solution parameters (pH, EC, DO) and periodic elemental analysis.
- * Planting in 17 batches over 15-day intervals to ensure continuous resource regeneration.
Main Results:
- * Wheat cultivar Wt04 demonstrated superior adaptability, yielding 12.82 g DM m-2 d-1 and high radiation use efficiency (RUE) of 0.28 g DM mol-1.
- * Cultivar Wt06 showed poor adaptation due to excessive vegetative growth.
- * Wheat plants exhibited dwarfism in the CELSS compared to field conditions.
Conclusions:
- * Cultivar Wt04 is a promising candidate for CELSS applications.
- * An innovative nutrient control pattern allows continuous recycling and maintenance of nutrient solutions without renewal.
- * Sustainable wheat cultivation is achievable in closed environments through careful cultivar selection and nutrient management.
