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．
