杂交中稻“3414”田间肥效研究

目的]探讨安徽省贵池区杂交中稻的最佳施肥量,以期获得最佳产量.方法] 2014年4～9月,通过在贵池区涓桥镇实施“3414”田间试验,经过“3414”数学模型分析得出理论氮、磷、钾大田最佳施肥量.结果]最佳产量：8 531.3 kg/m2;最佳施肥量：N 203.1kg/hm2、P2O529.3 kg/hm2、K2O 125.0 kg/hm2（由三元二次方程得出）.一元二次方程分析得出：N最佳产量8 674.1kg/hm2,最佳施肥量214.7 kg/hm2;P2O5最佳产量8 741.3 kg/hm2,最佳施肥量45.0 kg/hm2;K2O最佳产量8 596.9 kg/hm2,最佳施肥量73.8 kg/hm2.结论]结合当地实际生产情况,建议杂交中稻施肥量为N 195 kg/hm2、P2O537.5 kg/hm2、K2O 75 kg/hm2.

Study on the Field Experiment on the "3414" Fertilizer Efficiency Test of Hybrid Rice

Objective ] The research aimed to investigate the best fertilizer rate of hybrid rice at Guichi district, Anhui province , which in or-der to obtain the best production. Method ] The best fertilizer rate of nitrogen, phosphorus and potassium was researched by ＂3414＂ mathemati-cal model at Juanqiao town, Guichi district. Result] The best production 8 531.3 kg/hm2. The best fertilizer rate： N 203. 1 kg/hm2,P20529. 3 kg/hm2, K：O125.0 kg/hm2 （By ternary quadratic equation）. A yuan quadratic equation analysis： N best production8 674. 1kg/hm2 ,the best fertilizer rate 214.7 kg/hm2 ; P2Osthe best production8 741.3 kg/hna2, the best fertilizer rate 45.0 kg/hm2 ; K20 the bestproduction 8 596.9 kg/hm2, the best fertilizer rate 73.8 kg/hm2. Conclusion ] Combining with the practical production situation of local, it isrecommended that the fertilizer application of hybrid rice N195 kg/hm2 ,P2O5 37.5 kg/hm2 ,K20 75 kg/hm2.