Abstract:Caragana Korshinskii Kom was chosen to be used with very good results as growth media instead of peat.The parameters of the compound substrates were tested,including bulk density,total porosity,aeration porosity,water-holding porosity,porosity ratio,and pH and EC values.Experiments were conducted with cucumber‘Jinyu No.5’nurseries using caragana-included substrates.Rate of emergence,seedling dry and wet matter were also tested to figure out the effects that caragana had shown upon cucumber seedling.The results indicate that 50% of caragana-included substrate,being thoroughly decomposed,has the best quality for cucumber seedling,as compared with the traditional peat substrates.So the caragana-included substrates are feasible to replace peat substrates.