滴灌水肥一体化模式下不同施肥量对玉米生长性状及产量的影响

The effect of different fertilizer application amounts on maize growth traits and yield under drip irrigation of integral control of water and fertilization

为了筛选滴灌水肥一体化模式下滴灌玉米施肥最佳用量,采用田间试验研究玉米滴灌专用肥不同施肥处理对玉米生长性状及产量的影响.结果表明:各处理穗长、穗粗及秃尖随着施肥量的增加呈现不规律变化趋势,但表现均好于CK,不同生育期各处理地上部分单株干物质累积量随着施肥量的增加呈增长趋势,干物质累积速率呈先增加后降低的趋势,通过一元二次方程拟合,得出最高产量施肥氮磷钾配比为21.34∶7.76∶9.74.

In search for optimum dosage of drip irrigation fertilizer under drip irrigation of integral control of water and fertil-ization, a field trial was carried out to investigate the effect of different fertilizer treatments on maize growth traits and yield. Itturned out that the ear length, ear coarse and bald tip in different treatments showed a trend of irregular change with the in-crease of fertilization amount, better than CK, accumulation rate of dry materials of overground part in all treatments with theincrease of fertilization increased, accumulation rate of dry materials show as first increased and then decreased, fitting byquadratic equation, the conclusion comes out that proper N-P-K ratio fertilizer of optimum fertilizing quantity is 21.34：7.76：9.74.