密度和施肥对玉米杂交种邯丰79产量的影响

Effect of Density and Fertilizer on the Yield of Maize Cultivar Hanfeng 79

以玉米杂交种邯丰79为试验材料,采用四因素五水平二次回归正交旋转组合设计,研究了不同种植密度和氮、磷、钾施肥水平对籽粒产量的影响,以确定邯丰79适宜的种植密度和施肥水平。结果表明:邯丰79理论最高产量为11 231.7 kg/hm^2,因素组合为密度63 000株/hm^2、N施用量360 kg/hm^2、P_2O_5施用量360 kg/hm^2、K_2O施用量315 kg/hm^2,密度和施肥均对玉米产量存在极显著影响,4个因素对产量的影响程度顺序为密度>氮肥>磷肥>钾肥;两因素互作的产量效应中,密度与氮肥、密度与磷肥、氮肥与磷肥存在极显著的互作效应,密度与钾肥、氮肥与钾肥、磷肥与钾肥的互作效应不显著。在高密度种植条件下,加大氮肥和磷肥的施用量,同时配合施用一定的钾肥,可获得较好的增产效果。

In order to explore the optimum model of planting density and fertilization of the maize veriety Hanfeng 79,its yield was studied in the different planting densities and fertilizing levels using the quadratic rotational regression combination design.The results showed that the yield of Hanfeng 79 got maximum value under the density of 63 000 plant/hm^2 and the fertilization with N 360 kg/hm^2,P2O5 360 kg/hm^2,K2O 315 kg/hm^2,and the yeild reached 11 231.7 kg/hm^2.Density and fertilization had significant effects on maize yield,and the order of the application effect on the yield followed densityN〉P〉K.Moreover,there were interaction effects in planting density and nitrogen fertilize,planting density and phosphate fertilize,nitrogen fertilize and phosphate fertilize.So the yield of Hanfeng 79 could be improved with increasing the use of nitrogen and phosphate fertilize in high planting density and appropriate potash fertilizer conditions.