Abstract：The aim of this study was to investigate effects of recycled agricultural wastes on tomato quality and yield as well as soil NPK content, a tomato variety "Jinpeng 8" was used as test plant, and eight treatments of mushroom dregs, rice husk and wheat straw were designed, i.e. CK 0∶0∶0, T1 2∶0∶1, T2 0∶1∶2, T3 1∶2∶0, T4 1∶1∶1, T5 1∶0∶2, T6 2∶1∶0 and T7 0∶2∶1. The influence of agricultural wastes on the fruit yield, quality and soil NPK content were clarified experimentally. Results showed that the agricultural wastes increased soluble sugar, VC and lycopene content of tomato fruit, decreased organic acid content and intensified the sugar-to-acid ratio. The soluble sugar content in the fruit reached the maximum 3.30% in treatment T4, while the organic acid content was the lowest 0.30%. The sugar-to-acid ratio were 7.21, 8.49 and 8.60, respectively, in treatments T1, T2 and T5, and were better than those in treatment CK. The VC content was(9.62-17.54)×10-2 mg/g, increased by 33.16%-82.33% in comparison with treatment CK, and the differences in the content were statistically significant among the treatments. The lycopene content was as high as 82.88 mg/kg and 80.80 mg/kg in treatments T4 and T2, respectively, increased by 47.11% and 43.41% compared with those in treatment CK. In addition, the yield reached the highest of 100 927.02 kg/hm2 in treatment T2, increased by 31.41% compared with treatment CK and was subject to statistical significance. In treatment T3, the alkali-hydrolysable nitrogen content was at the highest of 131.26 mg/kg. The available phosphorus content in each treatment was significantly higher than treatment CK. The available kalium content was in a range of 127.02-155.03 mg/kg. The organic matter content in treatment T6 was at the highest of 1.60 g/kg. Comprehensively considering yield, quality and the other indices, treatment T2 was the better one.
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