Abstract: Using agricultural waste as eco-organic soilless culture substrate has far-reaching significance for reducing production cost, reducing input of water, fertilizer and medicine, and improving crop yield. In this study, eggplant was pot-planted with substrate materials including different ratio of mushroom residue, corn stalk and vermiculite, and the pH value, EC value and nutrient contents of different substrate ratios were analyzed, as well as the effect of substrate to growth and yield of eggplant. The results showed that the nutrient content of each compound substrate was always significantly higher than that of soil（control）before and after eggplant cultivation, and the order of superiority of each treatment was as follows:vermiculite:mushroom residue:corn stalk=5:3:2（volume ratio）, vermiculite:mushroom residue:corn stalk=4:3:3, and vermiculite: mushroom residue: corn stalk=6:2:2, soil. The morphology, yield and single weight of eggplant fruit under substrate cultivation were significantly higher than those in soil, and the ratio of vermiculite:mushroom residue:corn stalk=5:3:2 was the best composite matrix ratio in this experiment. This study provides scientific basis and technical reference for facility eggplant cultivation and full utilization of agricultural waste resources.

Key words: Organic ecotype soilless culture, mushroom residue, corn stalk, nutrient content, eggplant