| Cite this article: | 高彦婷,杨昌钰,张 芮,等.水分胁迫对温室滴灌葡萄根际土壤微生物碳源代谢活性的影响[J].灌溉排水学报,0,():-. |
| gaoyanting,yangchangyu,zhangrui,et al.水分胁迫对温室滴灌葡萄根际土壤微生物碳源代谢活性的影响[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Effects of Water Stress on Microbial Carbon Metabolism in Rhizosphere Soil of Greenhouse Grape |
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gaoyanting1, yangchangyu1, zhangrui1, linbaojun2, dongbo3, lihongxia1
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1.Gansu Agricultural University;2.Da Yu water saving group Limited by Share Ltd,Gansu province;3.Academy of Agricultural Sciences,Gansu province
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| Abstract: |
| Abstract:【Objective】To explore the response mechanism of soil microbial carbon source metabolism in the greenhouse grape rhizosphere to different drip irrigation levels in arid and semi-arid regions.【Method】A single factor completely randomized experiment was used to analyze the change characteristics of soil microbial carbon source metabolic activity under different water treatment levels (moderate stress W1 treatment, mild stress W2 treatment, and adequate water supply control CK).【Result】The utilization of monosaccharides, glycosides, polymerized sugars, amino acids, alcohols, acids and other carbon sources in the rhizosphere soil of greenhouse grapes is relatively high. The representative carbon sources are glucose-1-phosphate and D-cellobiose, Glycyl-L-glutamic acid,I-erythritol,4-hydroxybenzoic acid,r-hydroxybutyric acid; two stress levels can increase the metabolic activity of soil microbial carbon sources, and W2 treatment of soil microbes at the initial stage of stress. The carbon source utilization capacity was the highest, and the soil microbial carbon source utilization capacity was the highest in the middle and late stage W1 treatment; the total yield and the average weight of single fruit increased by 11.95% and 2.62% under mild stress conditions, and reduced yield under moderate stress.【Conclusion】Water stress can increase the soil microbial activity in the rhizosphere of greenhouse grapes and strengthen the overall carbon source metabolism. The W2 treatment has the strongest metabolic intensity at the initial stage of the stress, and the W1 treatment at the middle and late stages of the stress. |
| Key words: Drip irrigation；Greenhouse grapes;Soil micro-ecological environment;Water stress |
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