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- Title
不同生育阶段水/沼液一体化灌溉对 番茄生长及产量和品质的影响.
- Authors
郑 健; 朱传远; 齐兴贇; 魏佳芳; 杨少鸿; 孙 强
- Abstract
【Objective】Irrigation is an environment-friendly way to treat liquid wastes of biogas digesters, but how to reduce its detrimental impact on soils and improve the use of its nutrients is critical to its sustainable application in agricultural production. The purpose of this paper is to study the impact of irrigation with diluted biogas slurry on growth, yield and fruit quality of tomato.【Method】 The experiment was conducted in a greenhouse. Biogas slurry was diluted by freshwater at volumetric ratio of 1/4; it was then used to irrigate the crop at one of the following growth stages: seedling stage (P1), blooming and fruiting stage (P2), fruit expansion stage (P3) and fruit ripening stage (P4). Irrigation with freshwater was taken as the control (CK). For each treatment, we measured the growth physiology, nutritional quality of the fruits, as well as sugar accumulation.【Result】Irrigation with the diluted biogas slurry promoted growth, dry matter accumulation, yield and fruit quality of the tomato. Compared to P0, P2 and P3 increased the leaf area index by 48.32% and 36.89%, respectively, P3 accumulated more than 47.18% of the dry fruit-biomass. In addition, P3 also increased soluble sugar, titratable acid, sugar-to-acid ratio in the fruit, as well as fruit hardness most; and P2 improved vitamin C and soluble solids most significantly, compared to P0. Comprehensive benefit evaluation shows that fruit expansion was the key period for yield formation and fruit quality, keeping soil water and nutrients sufficient in which is hence essential. During the fruit ripening stage, the crop did not respond to irrigation and fertilization as noticeably as it did in other growing stages.【Conclusion】The optimal irrigation for greenhouse tomato is to dilute the biogas slurry with freshwater at 1∶4 volumetric ratio, and irrigate the crop at the fruit ripening stage.
- Subjects
LEAF area index; AGRICULTURAL productivity; RIPENING of crops; FRUIT yield; LIQUID waste; FRUIT ripening
- Publication
Journal of Irrigation & Drainage, 2022, Vol 41, Issue 5, p64
- ISSN
1672-3317
- Publication type
Article
- DOI
10.13522/j.cnki.ggps.2021164