In order to increase the yield of peanut, 7 agronomic traits of 3 peanut varieties (lines), Qianhua2084, Xianghua2008 and Qianhuasheng4, were investigated and analyzed with different appli-cation rate of nitrogen(N), phosphorus(P) and potassium(K) fertilizer.The result showed that N fertilizer could obviously promote growth and development of main stem and lateral branches of pea-nut, especially when the fertilizer application rate was 300kg /ha; P fertilizer could promote the vege-tative and reproductive growth of peanut comprehensively, especially when the fertilizer application rate was 450 kg /ha; 1 12.5 kg /ha of K fertilizer could increase peanut yield significantly.From the view of yield increase, the contribution of N fertilizer on peanut yield was the greatest, followed by P fertilizer as the second, and K fertilizer was the minimal.Taking varieties (lines) of peanut into ac-count, 3 different varieties (lines) showed different demand for the amount of N, P, K fertilizers.%为探明不同花生品种(系)在贵州种植条件下的需肥规律,进一步提高贵州花生单产水平,本试验以黔花2084、湘花2008、黔花生四号3个品种(系)为参试材料,研究 N、P、K 肥不同施用量对花生生长发育的影响。结果表明,N 肥对花生主茎高和侧枝长促进作用明显,且施用量在300 kg /hm2时效果最佳；P 肥对花生营养生长和生殖生长均具有促进作用,且施用量在450 kg /hm2时最佳；K肥施用量在112.5 kg /hm2时对花生增产作用最大。从 N、P、K 施肥水平对花生增产幅度来看,N肥对花生产量的贡献最大,其次为 P 肥,K 肥对产量的贡献最小,而不同品种(系)在 N、P、K 肥量的需求方面存在一定差异。
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