| Effects of alternating irrigation of deep and shallow pores of biogas slurry on root characteristics, yield and quality of tomato roots |
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| DOI：10.7606/j.issn.1000-7601.2025.03.08 |
| Key Words: split\|root alternate irrigation biogas root characteristics yield quality combination evaluation |
| Author Name | Affiliation | | ZHENG Jian | College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China
Key Laboratory of Multi\|Supply System with Solar Energy and Biomass, Lanzhou, Gansu 730050, China
Collaborative Innovation Center for Supporting Technology of Northwest Low\|Carbon Towns, Lanzhou, Gansu 730050, China | | WANG Youbin | College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China
Key Laboratory of Multi\|Supply System with Solar Energy and Biomass, Lanzhou, Gansu 730050, China | | SA Qinglin | College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China
Key Laboratory of Multi\|Supply System with Solar Energy and Biomass, Lanzhou, Gansu 730050, China | | WANG Yan | College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China
Collaborative Innovation Center for Supporting Technology of Northwest Low\|Carbon Towns, Lanzhou, Gansu 730050, China |
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| Abstract: |
| To explore the effects of alternating deep and shallow borehole split\|root irrigation with biomass on the morphology and quality of tomato roots, a pot experiment was conducted. The experiment included three biomass ratios (B1: 1∶2, B2: 1∶4, B3: 1∶6; biomass∶water, volumetric ratio) and four types of irrigation methods (I0: surface irrigation; I1: alternating 5 cm borehole\|deep split\|root irrigation; I2: alternating 10 cm borehole\|deep split\|root irrigation, I3: alternating 5 cm and 10 cm borehole\|deep split\|root irrigation). The effects of biogas ratios and irrigation methods on tomato root morphology, dry matter quality, yield, water use efficiency, and quality were examined. The study also applied independent evaluation methods, such as the TOPSIS method, symmetric interaction entropy multi\|attribute ranking method, VIKOR method, and grey correlation analysis, to assess the comprehensive benefits of tomatoes under different treatments. The evaluation results were combined using the mean value method, the fuzzy Borda method, and the Copeland method to propose the optimal treatment. The results showed that the dry matter mass of B2I3 treatment was the maximum value of all treatments, which was 30.35%, 17.92% and 5.94% higher than that of B2I0, B2I2 and B2I1 treatments, respectively; the diameters of tomato roots in all treatments were mainly concentrated in 0~2 mm, and the root length, root volume, surface area, number of root tips and root vigor of B2I3 treatment were the highest values of all treatments. The B2I0 treatment was able to obtain the highest yield (2.34 kg·plant-1), and the B2I3 treatment was able to obtain the best water utilization efficiency (98.43±0.29 kg·m-3). The comprehensive evaluation results showed that the B2I3 treatment was the optimal treatment in the experiment. This study provides theoretical support for the popularization and application of biogas hole irrigation technology in facility agriculture. |
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