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

Effects of nitrogen application on the growth,yield and quality of peanut were studied in field experiments.The results showed that the yield of pods increased along with nitrogen amount increases when application amount was less than 120 kg/hm2.The highest yield was 3639.88 kg/hm2 and increased by 18.61% as compared with control when the amount of applied nitrogen was 120 kg/hm2.Under 0~150 kg/hm2 nitrogen fertilizer rate,applying nitrogen fertilizer could promote their absorption of N,P and K,regulate the transportation and distribution of nutrients in peanut plants,increase the protein content in the kernel.The highest protein content was 27.00% and increased by 6.77% when the amount of applied nitrogen was 120 kg/hm2.The absorption of N,P,K and the yield of peanut were decreased obviously when the amount of applied nitrogen was over 150 kg/hm2.