摘要
试验以克单8号、绥玉12、海玉5号为试验材料．研究了低温对玉米种子发芽及苗期生长的影响，结果表明，温度低于17．5℃，春玉米种子发芽势、发芽率和活力指数均显著降低，温度低于5℃，种子不能发芽；温度在20．0～25．0℃范围内，玉米种子出苗时间较长，发芽势、发芽率和活力指数较低，苗期生长较弱；温度在25．0～32．5℃范围内，玉米种子发芽各项指标较高，出苗快，苗期生长强壮。
Took Kedan No. 8,Sulyu No. 12 and Haiyu No. 5 as materlal,the effect of temperature on germination and seedling growth of maize was studied. The results showed that the germination energy,germination rate and vigor index of maize were remarkable debasing below 17.5℃. The seed could not burgeon below 5℃. Every germination index of maize became lower, including germination energy,germinatlon rate and vigor index when temperature was in the range of 20～25℃. Every germination index of maize became higher and the seedlings come out quickly when temperature was in the range of 25～32.5℃ ,at the same time the seedling became stronger.
出处
《黑龙江农业科学》
2008年第1期37-39,共3页
Heilongjiang Agricultural Sciences
关键词
玉米
温度
种子
发芽
maize
temperature
seed
germination
