Effects of Different N,P and K Fertilizer Combinations on Yield and Agronomic Characters of Maize Hybrid 'Liaodan 527'
In recent years, the yield of maize was increased by planting many high-yielding cultivars with more chemical fertilizers input.Do well in maize production and fertilizer application was related to key problem of developing high-efficiency agriculture.Effects of different N, P, K fertilizer combinations on yield and agronomic characters of 'Liaodan 527' werestudied.Results showed that the highest seed yield of 'Liaodan 527' was at N 135.0-180.0 kg/hm2, P2O5 75.0-120.0 kg/hm2, K2O 90.0-120.0 kg/hm2 fertilizer combination treatments.There were quite significant differences in seed yield and the length of barren tip of ' Liaodan 527 'among fertilizer treatments in different N, P, K fertilizer combination trials.Correlation analysis showed that the number of kernels per ear of 'Liaodan 527' had a positive correlated with yield.The difference of 100-kernels weight between fertilizer treatments was significant at 0.05 or 0.01 in P and K fertilizer combination trials.The yield of 'Liaodan 527' was increased significantly by reasonable N, P and K fertilizer combinations applied, compared with other fertilizer combinations, N180P120K90 treatment had the highest yield.
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