摘要
本文采用通径分析的方法,对三个春玉米主要推广杂交种在不同群体条件下的产量构成因素进行了分析。结果表明,在低密度条件下亩穗数是限定产量的主要因素,在适宜密度范围内,穗粒数和千粒重对产量影响较大,在高密度条件下千粒重则是决定产量的主要因素。文章最后就春玉米在不同群体条件下提高产量的途径进行了讨论。
In this paper, the relations of yield and yield components in different populations were analysed with three spring corn hebreds by path—analysis. The result showed that ear number per hectare was the main factor affecting yield while the population was below the optimum. Effects of kernel number per ear and kernel weight were remarkble when population was at the optimum. And while the population was high over the optimum, the kernel weight seemed to be the main factor for limiting yield increase. At the end of the paper, the possible ways for increasing yield in different populations were also discussed.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
1992年第1期14-18,共5页
Journal of Hebei Agricultural University
