【摘要】 以优质蛋白玉米杂交种中单9409为试验材料,采用四因素二次回归通用旋转设计。试验结果表明,建立关中灌区产量在9000～10500kg/hm2的最佳农艺组合方案为:密度5.48万～6.29万株/hm2,种肥磷74.88～96.35kg/hm2,追氮肥183.3～202.3kg/hm2,追肥方式以拔节肥与穗肥之比为0.37∶0.63。更多还原

【Abstract】 Our material is elite protein maize hybrid Z h ongdan9409,using four factors and two frequency regression and ro-tation d esign.Our object is to make a best cultured project on the yield rang between9 000～10500kg/ha in the Guanzhong irri-gation regionin Shaanxi province .The result showed it needs the cultured density54800～62900plants/h a,P of planting is74.88～96.35kg/ha,N among plant growing is183 .3～202.3kg/ha,and the ratio of N between elongation stage and grain fi lling is0.37∶0.63.更多还原