CAJ | 학술논문

以郑单958为试验材料，比较了不同密度条件下玉米叶面积指数，干物质积累的动态变化，及密度对玉米籽粒产量的影响。试验结果表明，4.5万株/ hm2条件下，叶面积指数低，虽然单株干物质积累量最大，但群体干物质积累量不足；9万株/ hm2条件下，叶面积指数下降较快，不利于干物质的积累；6.75万株/ hm2条件下，叶面积指数前期上升快，下降慢，后期的干物质积累量多用于籽粒生长，产量最高。
이정단958위시험재료，비교료불동밀도조건하옥미협면적지수，간물질적루적동태변화，급밀도대옥미자립산량적영향。시험결과표명，4.5만주/ hm2조건하，협면적지수저，수연단주간물질적루량최대，단군체간물질적루량불족；9만주/ hm2조건하，협면적지수하강교쾌，불리우간물질적적루；6.75만주/ hm2조건하，협면적지수전기상승쾌，하강만，후기적간물질적루량다용우자립생장，산량최고。
In this paper,comparison the different density under of leaf area index,dry matter accumulation of dynamic change ,and the influence of the density of maize grain yield of zhengdan958. The result show that leaf area index was low,dry matter accumulation was largest,but insufficient amount of population dry matter accumulation under the 45 000 plants / ha. Leaf area index was falling faster,not condition to the accumulation of dry matte in 90 000 plants / ha. In this experiment,the maximum yield is the density of 67 500 plants / ha, leaf area index early was rising fast,slow down,more dry matter accumulation in the late for grain growth,the highest yield.