Abstract:Aiming to implement accurate and effective fertilizer management for protected cultured tomato, the tomato‘improved Jinpeng No.8’was selected as material. With the conventional substrate cultivation tomato nutrient solution management method as the control (CK), the tomato fruiting period was divided into the early fruiting stage (the third fruit of fruit set ~ the first of fruit mature) and the late fruiting stage (after the first ear of fruit mature ~ the fifth ear of fruit mature), the drip irrigation frequency in each fruiting period was set to be 1 time/d, 3 times/d and 5 times/d (the total amount of nutrient solution supplied was the same), and a total of 10 treatments. In order to study the effect of different treatments on the different layers fruit quality and yield of tomato, the effects of different treatment on quality and yield were investigated. Four single comprehensive evaluation methods, including principal component analysis, TOPSIS, membership function analysis and grey correlation analysis, were used to comprehensively evaluate the quality-yield of tomato multi-layer fruits. The single comprehensive evaluation result of the consistency test (Kendall-W) was used for fuzzy Borda combined evaluation to determine the optimal nutrient solution drip irrigation plan. The results showed that coupling treatment can significantly increase tomato yield. When the quality indexes of different layers of fruit were the best,the corresponding coupling treatments were different. There were differences in the ranking results of the four single comprehensive evaluation methods. The Kendall-W consistency test had a concordance coefficient of 0.920, which satisfied the combined evaluation conditions. The principal component analysis method and the fuzzy Borda method had the highest correlation coefficient (0.988). The best drip irrigation frequency was 1 time/d in the early fruiting stage; 3 times/d in the late fruiting stage based on the fuzzy Borda method, which can achieve higher yields of tomatoes and multi-layer fruits with high quality. The research result can provide the basis for scientific management of nutrient solution produced by facility tomato.