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| DOI：10.13522/j.cnki.ggps.2026026 |
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| Effects of irrigation level on growth, yield and fruit quality of cucumber cultivated in coconut coir substrate bags in solar greenhouse |
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LIU Binbin, LI Zhengyuan, SUN Qiying, LIU Xinying, LI Qingming
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1. College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China;
2. National Chengdu Agricultural Science and Technology Center, Chengdu 610213, China;
3. Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China;
4. Key Laboratory of Plant Factory Speed Breeding, Ministry of Agriculture and Rural Affairs, Chengdu 610213, China
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| Abstract: |
| 【Objective】The cultivation of high-quality vegetables in soilless substrates has increased significantly in recent years to meet rising market demand. In greenhouses, optimizing irrigation management is critical for sustainable vegetable production. Taking cucumber grown in coconut coir substrate bags as an example, this study experimentally investigates the effects of irrigation amount on cucumber growth, yield, and fruit quality.【Method】The experiment was conducted in a solar greenhouse using cucumber cultivar ‘Jinyou No. 35’ as the model plant. There were five irrigation treatments that irrigated 0.6 L/(plant·d) (R1), 0.8 L/(plant·d) (R2), 1.0 L/(plant·d) (R3), 1.2 L/(plant·d) (R4), and 1.4 L/(plant·d) (R5) of water during the fruiting stage, respectively. Plant growth parameters, including plant height, stem diameter, leaf pigment content, photosynthetic parameters, root activity, yield, fruit quality, and water use efficiency, were measured and analyzed for each treatment.【Result】Irrigating 1.0 L/(plant·d) resulted in the highest plant growth rate, photosynthetic capacity, root activity, and single fruit weight, but the highest total yield was obtained in the 0.8 L/(plant·d) treatment. Irrigating 1.0 L/(plant·d) produced the best fruit quality with the lowest tannin and nitrate contents.【Conclusion】Considering plant growth, yield, water productivity, and fruit quality, an irrigation level of 1.0 L/(plant·d) was optimal for achieving high-yield, high-quality, and high-efficiency production for cucumber in coconut coir substrate cultivation in solar greenhouses. |
| Key words: cucumber; irrigation mode; coconut coir bag; yield |
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