In order to study the effects of organic fertilizers,diammonium phosphate and potassium sulfate on photosynthetic physiological characteristics and yield of peanut in sandy soil,Four treatments with different fertilizers and a no fertilizer control were designed to study the effects of different fertilizers on leaves physiological characteristics and yield of peanut. The result showed that: the peak photosynthetic rate and transpiration rate of peanut leaves under different fertilizers were all appeared at ...