According to the mixture design {3，2} simplex lattice theory，the merits of different proportions of rice chaff，sludge compost and vermiculite mix substrates were analyzed from the physical and chemical properties，the growth of alkali thatch physiological indices，the turf comprehensive quality and grass production cycle，respectively.The results showed that all the substrate of sludge compost mixed with rice chaff（T4）and the substrate of sludge compost mixed with vermiculite（T6)，the substrate of sludge compost mixed with rice chaff and vermiculite（CK1）had excellent physicochemical properties with plenty nutrients，low bulk density and the suitable values of pH and EC，and were suitable for cultivating turf grass.Comparing with the field soil（CK2)，the substrate contains sludge compost increased the turf chlorophyll content.The root activity of T6 and CK1 decreased slightly but the catalase activity of them increased.Both the root activity and the catalase activity of T4 decreased slightly.The free proline content of T4，T6 and CK1 increased but didnt reach significant difference（P>0.05).For the turfgrass comprehensive quality,the highest value occurred in CK1，followed by T4 and T6.A model was established based on the ratio of the mixtures combined with the production cycle，a total of 5 151 combing schemes were obtained by simulation and optimization，in which the shortest production cycle scheme was 18 days whcih contained 1 335 combing schemes，the scopes of rice chaff（x1）sludge compost（x2)，vermiculite（x3）were 0≤x1≤90%，10%≤x2≤30%，0≤x3≤84%，respectively.Therefore，it was completely reliable and feasible to adopt rice chaff，vermiculite and sludge compost mixtures to cultivate the high quality alkali thatch soilless lawn.