青贮专用型玉米种植密度对单株和群体效应的影响

Effect of the Density of the Silage Corn to Single Plant and Population

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。结果表明:青贮专用型玉米只有保持单株和群体之间的平衡,即在一定的密度下保持较高的单株生产力,方能获得高产稳产。青贮玉米适宜密度为6.75×104～8.25×104株/hm2,青贮玉米营养体产量最高达91125 0kg/hm2。

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.The results showed that keeping the balance of single plant and population,that is to say keeping high yield of single plant in suit density helping to acquire high and stable yield,that suit density of silage corn is 6.75×10~4～8.25×10~4 plants/hm^2 and fresh yield is 91 125.0 kg/hm^2.