Effects of Controlled-release Fertilizers of Different Ratio Level on Yield and Main Agronomic Traits of Peanut on Hilly Red Soil

Field trial was carried out to discover the effects of different controlled-release fertilizers ratio on yield and main agronomic traits of the peanut with the variety ofZhongkaihua 1on hilly red soil.The results showed that:compared to traditional nitrogen fertilizer utilization,the application of controlled-release fertilizer could significantly increase the yield of peanut,and 2/3 and single application of controlled-release fertilizer reached extremely significant difference.2/3 and single application of controlled-release fertilizer increased the number of lateral branch,green leaves in stem,pod yield per plant and plump-pod number per plant significantly.The application of controlled-release fertilizer could increase canopy NDVI index in pod-setting and maturity stages of peanut.The best effect on yield of peanut was the treatment of 0.78 application ratio of controlled-release fertilizer.