【摘要】 通过氮、磷、钾"3414"田间试验,建立以花生产量为目标函数的三元二次、二元二次及一元二次3类函数7种肥力效应模型,并对其提供的施肥决策及产量期望进行经济效益分析。结果表明,以NP二元二次回归模型提供的施肥决策产投比最高(20.55),且花生荚果产量期望较高(4 586.16kg/km2),即在固定施K2O 60kg/km2下,施N 170.16kg/km2、P2O563.84kg/km2宜作为新乡市东部地区种植花生的推荐施肥量。更多还原

【Abstract】 Based on NPK "3414" field test data,7 fertilizing effect models of ternary,binary and unary quadratic,taking peanut yield as the target function,were set up.Effect analysis of fertilizer strategy and the corresponding yield were carried out.The results showed that the fertilizer formula,which was given by binary quadratic regression model of NP,i.e.N 170.16 kg/ha,P2O5 63.84 kg/ha,K2O 60 kg/ha,yield expectation could reach up to 4 586.16 kg/ha,the ratio of output to input was 20.55.This formula could be recommended to eastern peanut planting region of Xinxiang.更多还原