摘要
利用4个代表当前植株类型的玉米杂交种，研究了5种密度对形成玉米产量性状有关部分性状的影响。结果表明。随着种植密度的增加，与玉米产量有正向相关的主要个体产量性状呈现出不同程度的下降，玉米单株的叶面积、光合势和地上部干物质积累呈现出下降趋势；而群体的叶面积、叶面积系数、光合势和地上部干物质积累呈现出增高趋势；玉米产量先增加后下降。当前类型的玉米品种出现高产的种植密度在70000株／hm^2～90000株／hm^2，获得最高产量的种植密度是在80000株／hm^2。
The effects of the yield and the related part characters was studied on four maize （zea mays L. ） hybrids which represent the maize plant type in recent years in 5 plant densities. The results showed that the main individual yield characters which have positive correlation with yield decreased in different degree with the addition of the plant density,so did the maize single stub leaves area, the leaf area duration（LAD）,and the above-ground dry material accumulation, but the population characters increased. The yield showed a curve of first increase and later drop. It is suggested that the high yield had earned in plant density from 70 000 plants/hm^2 to 90 000 plants/hm^2 in recent plant type of maize, and the highest yield did in 80 000 plants/hm^2.
出处
《西北农业学报》
CAS
CSCD
北大核心
2006年第5期57-60,64,共5页
Acta Agriculturae Boreali-occidentalis Sinica
关键词
玉米
种植密度
性状
Zea mays L.
Plant density
Characters
