Abstract:

Spatial prediction model for peanut O/L ratio is established based on nine ecological factors influencing O/L ratio. Furthermore, spatial distribution of peanut O/L ratio in China is predicted. The prediction results indicate that peanut O/L ratio increases form north to south obviously, The average value is about 1.06;High- ratio region distributes mainly in south of middle-lower Yangtze and southeastern coastal area, the average value is about 1.27; Low- ratio region distributes mainly in northeast and northwest area, the average value is about 0.83. The results have instructive significance for production and breeding department to improve peanut O/L ratio, develop quality breeding work for promoting internal quality of peanut and enhancing international competitiveness，establish peanut special production base and optimize regional production layout.