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不同追肥方法对高原玉米产量及产量形成过程中源、库、流的作用和影响是不同的。研究结果表明,高原玉米叶龄追肥的产量明显高于对照,其产量形成过程中表示源、库、流的重要指标如叶面积系数、干物质积累、光合势、净同化率、产量性状、实际库容、库源比、经济系数以及光能利用率和能量积累状况等均显著优于常规追肥。这充分表明叶龄追肥对高原玉米增库促源具有良好的效果。试验结果同时显示:栽培措施中的肥料运筹对产量形成至关重要,证明生产上可通过合理运筹肥水的促控措施,达到增库促源,从而实现提高产量的目的。
The effect of different dressing methods on the yield and yield of plateau maize is different from that of source, reservoir and stream in the process of plateau production. The results showed that the leaf yield of topdressing maize was significantly higher than that of the control at the leaf age, and the important indicators of source, sink and flow in the process of yield formation were leaf area index, dry matter accumulation, photosynthetic potential, net assimilation rate, yield traits, Storage capacity, source and sink ratio, economic coefficient and light energy utilization and energy accumulation were significantly better than the conventional top dressing. This fully shows that leaf age topdressing fertilizer on the plateau corn has a good effect. The results of the experiment also showed that the fertilizer operation in the cultivation measures is very important to the yield formation, which proves that the production increase can be achieved by promoting the control of fertilizers through rational management so as to achieve the purpose of increasing output.