Study on the effect of different densities of silage corn to the leaf area, dry matter and fresh yield of both single plant and population in 2002~2003.
通过2002～2003年对青贮专用型玉米不同种植密度下，单株和群体叶面积、干物质积累及单位面积生物产量变化的研究，探讨单株和群体之间的相互影响。
The dry matter weight per unit, dry matter accumulation per stem( panicle), and transportation of leaf apparent matter was more than the high yield crop management.
与传统高产栽培管理比较，单位面积干物重、茎物质积累量和叶片的物质表观转出量高。
Results showed that nitrogen fertilization rate significantly affected tobacco plant growth, leaf SPAD value, dry matter accumulation, leaf yield, economic value as well as chemical components.
结果表明：在绿肥全部还田条件下，不同氮肥用量对烤烟株高、烟叶spad值、烟株干物质累积以及烤后烟叶产量、产值和化学成分均有一定的影响。
Results showed that nitrogen fertilization rate significantly affected tobacco plant growth, leaf SPAD value, dry matter accumulation, leaf yield, economic value as well as chemical components.
结果表明：在绿肥全部还田条件下，不同氮肥用量对烤烟株高、烟叶spad值、烟株干物质累积以及烤后烟叶产量、产值和化学成分均有一定的影响。
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