摘要
以合丰45和红丰11为材料,设计6个不同的群体分布,株距(cm)×垄上行距(cm)分别为:8×8,8×10,8×12,10×8,10×10和10×12进行田间试验。采用LSD法比较分析群体分布对产量及其性状的影响。结果表明:群体分布显著影响合丰45和红丰11的产量及其性状;合丰45的补偿效应值大于红丰11,红丰11的密度效应值则高于合丰45;补偿效应值和密度效应值均受群体分布影响;8 cm株距时,2个品种的产量与行距呈线性回归关系,10 cm株距时,2个品种的产量与行距表现出开口向下的抛物线回归关系;株型的差异导致产量极值出现在不同的群体分布水平上,具体表现为合丰45和红丰11分别在10 cm×10 cm和8 cm×12 cm群体分布时产量最大。
The propose of this study was to analyze the effect of population distrabution on yield formation of different soybean types to provide valuable information for soybean high-yield cultivation.This research was carried out with Hefeng45 and Hongfeng11 soybean cultivars by setting 6 different population distributions,which were 8×8,8×10,8×12,10×8,10×10 and 10×12 in plant spacing（cm） ×row spacing（cm）,respectively.LSD method was used to analyse changes of yields and yield traits.The values of compensation effect and density effect were calculated.The results showed population distribution had significant effect on yield and yield traits,the value of compensation effect of Hefeng 45 was higher than that of Hongfeng 11 and the value of density effect of Hongfeng 11 was higher than that of Hefeng 45.Population distribution had effects on both compensation and density effect value.Yields of the 2 cultivars changes showed a linear regression relationship and downward convex quadratic parabola regression relationship respectively in plant spacing of 8 cm and 10 cm.The yield extreme value varied with plant type,and that of Hefeng 45 and Hongfeng 11 appeared in the 10 cm×10 cm and 8 cm×12 cm population distribution level,respectively.
出处
《大豆科学》
CAS
CSCD
北大核心
2010年第4期634-637,共4页
Soybean Science
基金
国家"十一五"科技支撑计划资助项目(GA06B101)
国家科技支撑计划资助项目(2007BAD89B05-19)
关键词
大豆
群体分布
补偿效应
密度效应
产量
soybean
group distribution
compensation effect
density effect
yield
