| Construction of comprehensive evaluation model for tomato nutrition quality based on method set and its response to water and fertilizer supply |
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| DOI：10.7606/j.issn.1000-7601.2019.03.17 |
| Key Words: greenhouse tomato nutritional quality combination evaluation model method set fertilizer irrigation |
| Author Name | Affiliation | | HONG Xia | College of Water Resources and Architectural Engineering, Northwest A＆F University, Yangling, Shaanxi 712100, China
Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semi-arid Areas, Ministry of Education, Northwest A＆F University, Yangling, Shaanxi 712100, China | | Hu Tian-tian | College of Water Resources and Architectural Engineering, Northwest A＆F University, Yangling, Shaanxi 712100, China
Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semi-arid Areas, Ministry of Education, Northwest A＆F University, Yangling, Shaanxi 712100, China | | LIU Jie | College of Water Resources and Architectural Engineering, Northwest A＆F University, Yangling, Shaanxi 712100, China
Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semi-arid Areas, Ministry of Education, Northwest A＆F University, Yangling, Shaanxi 712100, China | | FENG Pu-yu | College of Water Resources and Architectural Engineering, Northwest A＆F University, Yangling, Shaanxi 712100, China
Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semi-arid Areas, Ministry of Education, Northwest A＆F University, Yangling, Shaanxi 712100, China | | WANG Li | College of Water Resources and Architectural Engineering, Northwest A＆F University, Yangling, Shaanxi 712100, China
Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semi-arid Areas, Ministry of Education, Northwest A＆F University, Yangling, Shaanxi 712100, China | | YANG Shuo-huan | College of Water Resources and Architectural Engineering, Northwest A＆F University, Yangling, Shaanxi 712100, China
Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semi-arid Areas, Ministry of Education, Northwest A＆F University, Yangling, Shaanxi 712100, China | | ZHANG Mei-ling | Inner Mongolia Water Conservancy and Hydropower Survey and Design Institute, Hohehot，Inner Mongolia 150100，China |
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| Abstract: |
| The objectives of this study were to investigate the response of tomato nutritional quality to irrigation and fertilization, and to explore a comprehensive method for evaluating the quality. A greenhouse experiment was designed using quadratic general composite rotatable method with five factors including irrigation, organic fertilizer, nitrogen (N) fertilizer, phosphorus (P) fertilizer, and potassium (K) fertilizer. Six quality indexes including soluble solid, soluble sugar, titratable acid, the ratio of sugar and acid, lycopene, and vitamin C were measured at the ripening stage of tomato fruit. We applied method set theory that is based on principal component analysis, membership function analysis, the TOPSIS model based on combination weighting, and grey relational grade analysis. By using whole diversity-based reasoning for objective combined evaluation, the evaluation model for tomato nutrition quality was established and its response to fertilization and irrigation was explored. The results showed that there was a strong correlation between the ranking values obtained by the 4 independent evaluation methods and they were verified by the KENDALL-W consistency test. The correlation coefficients of the ranking values between combination evaluation model and independent method were above 0.943, indicating the evaluation model was reliable. It also reflected the effectiveness of combination evaluation model. Therefore, the response function of tomato comprehensive nutritional quality index to water and fertilizer amount was established. The effects of water and fertilizer factors on the comprehensive nutrient quality of tomato ranked as organic fertilizer quantity > P quantity> N quantity ≥ irrigation quantity > K quantity. When other factors were at the intermediate levels, the comprehensive nutrition quality of tomato responded with increasing water, N, P, or organic fertilizer in an opening downwards parabola, and an opening upwards parabola with increasing K. A negative interaction of the amount of K fertilizer with irrigation and N fertilizer was observed. There was a positive interaction of the amount of P fertilizer and organic fertilizer. It indicated that nutritional quality tomato could be obtained when the amounts of irrigation, organic fertilizer, and N, P, and K fertilizers were at 447.9~462.6 mm, 23.2~24.0 t·hm-2, 532.6~581.0 kg·hm-2, 418.0~454.3 kg·hm-2, and 712.6~776.9 kg·hm-2, respectively. |
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