In order to improve nutrient utilization efficiency by cucumber and reduce the environmental pollution, special?slow-release fertilizers containing urease inhibitor (NBPT), hydroquinone (HQ) and nitrification inhibitor (DCD) were produced according to the nutrient requirements of cucumber. Nitrogen release characteristics of?two special?slow-release fertilizers were studied by using the "soil incubating method". Pot experiments were conducted to study the effects of slow-release fertilizers on yield, uptake and utilization rate of fertilizer and NPK by cucumber. The results showed that in three different soils, nitrogen release accumulation was in the order of ordinary compound fertilizer (OCF) > commercial slow-release fertilizer (MSRF) > cucumber special compound fertilizer NO.1 (CCF) > cucumber special slow-release fertilizer NO.2 (CSRF1) > cucumber special slow-release fertilizer (CSRF2), and nitrogen release accumulation in special slow release fertilizers (CSRF1 and CSRF2) were less than that of other fertilizer treatments. The amount of accumulated nitrogen release of different fertilizer treatments in three different soil types showed the order of alkaline soil > neutral soil > acid soil. Nitrogen accumulation amount of NH4+-N was more than that of NO3--N, possibly due to the nitrification inhibitor (DCD) could not only inhibit soil nitrification and denitrification processes, but could also inhibit soil denitrification process. The nitrification process was inhibited by nitrification inhibitors, and the nitrogen fertilizer would remain in the soil for a long time in the form of NH4+-N. Nitrogen accumulation amount of NH4+-N and NO3--N was also in the order of alkaline soil could neutral soil > acid soil. The dynamic release of different forms of nitrogen in three soils was fitted with a dynamic equation of the first order kinetic equation (r = 0.952**-0.993**). Using the first order kinetic equation, the N0 value of the maximum release rate of different forms of nitrogen was in the order of total N > NH4+-N > NO3--N, which was consistent with the changes of the accumulation and release characteristics of different forms of nitrogen in the soil. The dynamic characteristics of nitrogen release by the equation were suitable for the prediction of the release properties and release characteristics of nitrogen in the soil. Two kinds of special slow release fertilizers (CSRF1 and CSRF2) significantly increased the yield of cucumber by 59.1%, 30.3%, 33.8% (CSRF1), and 46.2%, 19.7%, 22.9% (CSRF2), compared with treatments of OCF, MSRF and CCF, respectively. Compared with common compound fertilizer, nutrient relative utilization efficiency of NPK in two kinds of special slow release fertilizer treatments was increased by 18.52%-24.20% (N), 19.27%-20.02% (P), and 28.54%-35.69% (K), respectively. Compared with traditional fertilizer, the use of two special slow-release fertilizers could effectively delay the N release in the soil, and increase the uptake of N, P, and K by cucumber plants and cucumber yield.