摘要
本研究采用"3414"试验设计方案,通过2年(2010和2011年)大麦田间小区试验,研究NPK配施对大麦产量的影响及肥料效应,为该区大麦种植提供可行的肥料推荐施用量。结果表明,不同施肥处理的大麦穗长、穗粒数、有效穗数和产量存在显著差异。施肥通过改善大麦农艺性状进而提高大麦产量,两年试验大麦产量增产幅度分别为4.8%~117.2%和8.6%~141.2%;并且氮、磷、钾肥间存在显著互作效应,在中氮、中磷和中钾施肥水平大麦产量可达最佳,其肥料效应顺序为N>P_2O_5>K_2O。通过曲线拟合,本试验条件下推荐施肥量为:117.3 kgN/hm2,116.0~117.2kg P_2O_5/hm~2,37.5 kg K_2O/hm~2。
2 years(2010 and 2011) field plot experiments was conducted with the 3414 experiment design, effect of N, P and K on yield and fertilization effect were researched to recommend optimum application amount for local barley planting region. The results showed that ear length, kernels per spike, effective ears and barley yield of different fertilizer treatments are significant difference.Fertilization improving the barley agronomic trait further increased crop yield, rates of increasing reached 4.8%~117.2% in 2010 and8.6%~141.2% in 2011. There are significant interactions among N, P and K fertilizer, and the optimum yield was obtained at moderate N, P and K treatment level, the fertilizer effect order was N>P_2O_5>K_2O. The recommended application amounts were N of 117.3 kg/hm~2,P_2O_5 of 116.0~117.2 kg/hm~2, K_2O of 37.5 kg/hm~2 through curve fitting.
引文
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