Abstract: To verify the effects of trace element fertilizer molybdenum on peanut yield and the suitable amount a peanut field tests was conducted. The five fields were treated with different amount of molybdenum fertilizer at initial bloom stage and full bloom stage(each of 50%) on even base fertilizer.. The test index conclude the main stem height, lateral branch length, total branch number, fruit branch number, kernel weights per plant, 100 kernel weights, kernel percentage and yield. The results showed that the adding molybdenum fertilizer could increase the peanut yield by improvng the yield components such as the main stem height, branch length, total branch number, fruit length per plant, kernel weight, kernel yield, fruit number per plant. The best economical fertilization is 1.50 kg/hm².

Key words: fertilizer reducing and efficacy enhancing, molybdenum fertilizer, utilization effect, field test, peanut yield, the best economical fertilization amount