Abstract: Based on the standard fertilization amount of peanut controlled-release mixed fertilizer, six fertilization treatments were set up. Treatment 1, 2, 3 and 4 were peanut controlled-release mixed fertilizer 750, 675, 600 and 450 kg/hm² respectively, treatment 5 was ordinary ternary compound fertilizer 750 kg/hm², and treatment 6 was no fertilization. The reduction and efficiency of controlled-release mixed fertilizer was investigated. The results showed that the yields of peanut controlled-release mixed fertilizer increased significantly. Compared with treatment 6, the yield of treatment 1, 2, 3 and 4 increased by 19.6%, 18.8%, 18.2% and 14.8%. Compared with treatment 5, treatment 1, 2 and 3 increased production more. With the decrease of the application level of peanut controlled-release mixed fertilizer, the peanut yield decreased, but the reduction was not significant. The profit of peanut controlled-release mixed fertilizer 600 kg/hm² （reduced application by 20%） was higher than that of other treatments, which was an ideal scheme for reducing application and increasing efficiency.

Key words: peanut controlled-release mixed fertilizer, reduced construction, yield, economic performance