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本试验采用“3414”完全试验方案,以“德禹211”玉米品种为材料,在吉林舒兰市具有代表性的冲积土上进行氮、磷、钾肥料效应田间试验。采用肥料效应函数法原理进行回归模型分析。试验结果表明:该区亩最大施肥量为纯氮14.924kg,纯磷5.361kg,纯钾8.663kg,相应的产量为780.376kg;最佳施肥量为纯氮14.806kg,纯磷5.211 1kg,纯钾7.944kg,相应的产量为779.090kg。氮磷(NP)、氮钾(NK)、磷钾(PK)与产量(y)存在脊背型关系。二者施用量交互作用即配合适宜时,有利于提高产量;氮(N)、磷(P_2O_5)、钾(K_2O)的施用量与玉米产量(y)存在显著的上抛物线关系。
In this experiment, “3414” complete experiment was used to test the effects of nitrogen, phosphorus and potassium fertilizers on the representative alluvial soil in Shulan City, Jilin Province based on “De Yu 211” maize variety. Using the principle of fertilizer effect function regression model analysis. The results showed that the maximum fertilization amount of mu in this area was 14.924kg of pure nitrogen, 5.361kg of pure phosphorus, 8.663kg of pure potassium and the corresponding yield of 780.376kg. The optimum fertilization amount was 14.806kg of pure nitrogen, 5.211kg of pure phosphorus, 7.944 kg, corresponding to a yield of 779.090 kg. Nitrogen and phosphorus (NP), nitrogen and potassium (NK), phosphorus and potassium (PK) and yield (y) spine type relationship exists. The interaction between the two treatments, that is, when appropriate, is conducive to increasing yield. There is a significant parabolic relationship between the application rates of nitrogen (N), phosphorus (P_2O_5) and potassium (K_2O) and corn yield (y).