A field split plot experiment was conducted in Guizhou yellow soil areas to explore the effects of fertilizing amount and cultivar difference on maize yield,biological traits,nutrient absorption and quality.Results showed that interaction of fertilizing amount and cultivars had very significant influence on maize yield.In this study,yield of Jinyu 506 increased firstly and then decreased with the fertilizing amount increasing,which reached the highest 10 229.3 km/hm2when the fertilizing amount was moderate increasing 15%.Yield of Qiandan 24 decreased with the increasing of fertilizing amount,which reached the highest 9 434.1 kg/hm2 when the fertilizing amount was at the recommended amount.Yield components of different treatments had significant difference.Cultivar and fertilizing amount had significant effects on ear diameter and kernel weight of maize.Thousandgrain weight of the two maize cultivars increased with the increase of fertilizing amount,which increased by 2.2%~10.3% and 3.2%~6.8% respectively.As for biological traits,plant height,ear height and stem diameter of Jinyu 506 were the best with moderate fertilizing amount,which were 308.5,130.4 and 2.6 cm respectively.Plant height,ear height and stem diameter of Qiandan 24 were the best with recommended fertilization amount,which were 311.6,138.0 and 2.43 cm respectively.Cultivar and fertilizing amount had significant effects on nutrient uptake of maize plant.Nitrogen,phosphorus and potassium uptake of Jinyu 506 increased with the increasing of fertilizing amount by 24.8%~32.7%,44%~47.8% and 5.9%~456% respectively.Nitrogen,phosphorus and potassium uptake of Qiandan 24 decreased with the increasing of fertilizing amount by 3.8%~13%,11.8%~23.5% and 3.9%~15% respectively.In quality,fertilizing amount and cultivar had certain effects on maize quality,increasing fertilizing amount was beneficial for increasing the content of starch and protein,the content of reducing sugar decreased with the increase of fertilizer application.According to the nutrient requirements of different maize cultivars,scientific and reasonable fertilization was conducive to improve the biological characters,nutrient absorption,and then promoting the improvement of yield and quality of maize.