摘要
研究了南阳大豆5个推广时期17个代表品种农艺性状的演变和发展趋势。结果表明,在大豆品种更替过程中,农艺性状演变表现为植株高度明显降低,百粒重、单株粒重和有效分枝数大幅度增加,底荚高和单株荚数趋于稳定,百粒重对单株粒重的提高起着决定性作用。从主要栽培品种种植比例变化情况看,其发展趋势为品种熟期变早;植株变矮,抗倒伏能力增强;粒型增大;品质改善。推广品种的变化,适应了南阳的生态条件、耕作栽培制度的改革以及商品流通的需要。随着生产水平的提高和生态育种的发展,大豆品种更替周期将进一步缩短。
The evolution and development tendency of agronomic characters of 17 typical Nanyang soybean varieties were studied. During the five popularizing periods,plant height dropped, 100-seed weight,seed weight per plant and effective branches increased. 100-seed weight was a key factor influencing the production of plant kernals. From the changes of planting ratio of the main cultural varieties,the mature time came earlier,the ability of resistance to lodging raised,the volame of seeds increased and the quality improved. The popalarizing varieties are suited to the ecological contitions of Nanyang and the changing period of soybean will be shortened.
出处
《河南农业大学学报》
CAS
CSCD
1992年第3期273-277,共5页
Journal of Henan Agricultural University
关键词
大豆
农艺性状
演变
生态类型
soybean
varieties changing
agronomic character
evolution
tendency
Nanyang
