不同种植密度、品种及氮磷钾肥用量对玉米产量的影响

Effect of Planting Density,Cultivar and Amount of Nitrogenous,Phosphate and Potash Application on Yield of Corn

试验采用裂区试验设计,副区采用L9(34)正交设计,研究了不同的种植密度、品种和氮、磷、钾肥用量对玉米产量的影响。结果表明:密度以3 699株/667 m2产量最高,达到了652 kg/667 m2;副处理正交试验9个水平中,以黔单100、施纯氮18 kg/667 m2、P2O512 kg/667 m2、K2O 10 kg/667 m2产量最高(703.1 kg/667 m2)。方差分析表明:除钾肥用量达显著差异水平外,其他因素均未达显著差异水平;施K2O量以20 kg/667 m2最高,与10 kg/667 m2无明显差异,二者均与不施肥有显著差异;其他因素均未达显著差异水平。

Effect of planting density,cultivar and amount of nitrogen,phosphorus,potassium fertilizer on yield of three corn varieties,xinzhongyu 801,Qiandan 100 and Jinxiang 369,were investigated by split-plot designs and L9 （34） orthogonal experimental design.The results showed that the best planting density was 3699/667 m2,by which the yield of 652 kg/667 m2 was gained.The highest yield （703.1 kg/667 m2） of Qiandanl00 was obtained from the planting density of 3699 plants/667 m2 combined with application of N 18 kg/667 m2 P2O5 12 kg/667 m2,K2O 10 kg/667 m2.With the exception of K2O amount,no significance differences in yield were observed from other fertilizers.