CAJ | 학술논문

　　以常规种谷子品种承谷13号、朝谷13号和宽九为试材，采用裂区试验设计，研究不同种植密度（30.0万、37.5万、45.0万、52.5万和60.0万株/hm2）对谷子产量和群体特征的影响。结果表明：种植密度为30.0万～60.0万株/hm2时，随密度的增大，叶绿素含量逐渐增大，叶面积指数和地上部干物质产量升高，透光率逐渐降低，产量表现为先增加后降低。常规谷子高产的群体特征为种植密度37.5万～45.0万株/hm2、开花期叶面积指数4.30～4.63，经济系数高，群体透光性较好。并对不同种植密度下开花期谷子的群体特征（叶面积指数、叶绿素含量、地上部干物质产量、透光率）与产量进行多元逐步回归分析，结果显示，仅地上部干物质产量与产量存在显著的回归关系。再通过对地上部生物产量和经济系数与产量进行通径分析发现，地上部干物质产量是获得高产的物质基础，但受经济系数制约较大。
　　이상규충곡자품충승곡13호、조곡13호화관구위시재，채용렬구시험설계，연구불동충식밀도（30.0만、37.5만、45.0만、52.5만화60.0만주/hm2）대곡자산량화군체특정적영향。결과표명：충식밀도위30.0만～60.0만주/hm2시，수밀도적증대，협록소함량축점증대，협면적지수화지상부간물질산량승고，투광솔축점강저，산량표현위선증가후강저。상규곡자고산적군체특정위충식밀도37.5만～45.0만주/hm2、개화기협면적지수4.30～4.63，경제계수고，군체투광성교호。병대불동충식밀도하개화기곡자적군체특정（협면적지수、협록소함량、지상부간물질산량、투광솔）여산량진행다원축보회귀분석，결과현시，부지상부간물질산량여산량존재현저적회귀관계。재통과대지상부생물산량화경제계수여산량진행통경분석발현，지상부간물질산량시획득고산적물질기출，단수경제계수제약교대。
The effects of different planting densities (30.0 ×104, 37.5 ×104, 45.0 ×104, 52.5 ×104, 60.0 × 104 plants/hm2) on yield and population character of Chenggu No.13, Chaogu No.13 and Kuanjiu were studied by split block test design.The results showed that under the planting density of 30.0 ×104 -60.0 ×10 4 plants/hm2 , with the increasing of planting density, chlorophyll content, leaf area index, dry materials above ground were increased gradually, transmission rate was decreased gradually, yield was increased first and then decreased.The population characters of the three normal foxtail millet were that the planting density was 37.5 ×10 4 -45.0 ×10 4 plants/hm2, leaf area index at following stage was 4.30 -4.63, economic index was higher and transmission of light was better.The results of multiple regression analysis on population characters and yield under different planting densities at following stage showed that there was significant regression relationship between dry matter yield aboveground and yield.The results of path analysis on dry matter yield aboveground , economic coefficient and yield further showed that dry matter yield aboveground was the material foundation for high yield , but was restricted by economy coefficient obviously.