摘要
利用"3414"肥料效应试验,研究了大蒜(Allium sativum L)氮(N)、磷(P2O5)、钾(K2O)肥料合理施用量。结果表明,由三元二次肥料效应函数获得的最佳经济产量略低于由一元二次肥料效应函数获得的平均最佳经济产量;三元二次肥料效应函数得到的最佳经济产量施肥量明显低于一元二次肥料效应函数得到的。因此,三元二次肥料效应函数可应用于大蒜推荐施肥。通过三元二次肥料效应函数获得的豫东潮土大蒜推荐施肥指标为氮(N)335.87 kg/hm2、磷(P2O5)207.93 kg/hm2、钾(K2O)195.34 kg/hm2,可获得最佳经济产量18 720.15 kg/hm2。
Using the ＂3 414＂ fertilizer effect experiment, the optimal application of nitrogen（N）, phosphorus（P2O5）, potassium（K2O） fertilizer was investigated. The results showed that the optimal economic output by the three-factor quadratic function of fertilizer effect was slightly lower than that by one-factor quadratic function. In the case of the amount of fertilizer obtained the optimum economic output of the former was significantly lower than that of the latter. The quadratic function of three variants could be used to recommend the usage of fertilizer for garlic. According to the three-factor quadratic function of fertilizer effect, the recommended consumption of nitrogen（N）, phosphorus（P2O5） and potassium（K2O） fertilizer in fluvo-aquic soil region of eastern Henan province was 335.87 kg / hm2, 207.93 kg / hm2 and 195.34 kg / hm2, respectively. The optimal economic output obtained was 18 720.15 kg / hm2.
出处
《湖北农业科学》
2015年第3期543-545,549,共4页
Hubei Agricultural Sciences
基金
河南省商丘市基础与前沿技术研究计划项目(20115006)
