Abstract: The effects of different temperatures on the nutrient releasing characters of APEX horticultural release-controlled fertilizer were studied.The results show that the release ratios of three kinds of release-controlled fertilizer are affected by the temperature,and with the temperature rising,the release ratio is promoted,the release cycle is shortened,and the sensitivities of three release-controlled fertilizers on temperature are different,the evergreen plant fertilizers,expecially P and K are easily affected by temperature,the release ratio of tree plant fertilizers is affected little by temperature,its release is stable and the controlled efficiency is the best.