Effects of Potassium Application on Nutrient Absorption,Yield and Quality of Peanut

Effects of potassium application on the growth,yield and quality of peanut were studied in field experiment.The results showed that the yields and pods were increased along with potassium amount increase when application amount was less than 60kg/hm2,the highest yield was 3639.88kg/hm2 and increased by 18.17% as compared with control when the amount of applied potassium was 60kg/hm2.Under 0～90kg/hm2 potassium fertilizer rate,applying potassium fertilizer could accelerate their absorption of N,P and K,regulate the transportation and distribution of nutrients in peanut plants,increase the crude fat content in the kernel.The highest crude fat content was 51.56% and increased by 5.48% when the amount of applied potassium was 90kg/hm2.The absorption of N,P,K and the yield of peanut were decreased obviously when the amount of applied nitrogen was over 90kg/hm2.The best potassium application was 63.3kg/hm2 under this experimental conditions.