摘要
应用植物生长分析技术对春大豆早、中、迟熟类型的研究表明，生育期的差异主要在初花后的生殖生长期。在现蕾至现蕾后１０天内，株高和叶面积指数（ＬＡＩ）增加最快。早、中和迟熟品种的ＬＡＩ分别在现蕾后２０和３０天达到最大，比叶面积（ＳＬＡ）和叶重比（ＬＷＲ）随着生育进程而逐渐下降，ＳＬＡ处理间无多大变化，而ＬＷＲ早熟春大豆下降快，至生育后期已降至较低。早、中熟春大豆叶片的相对生长速度（ＲＧＲ）至现蕾后３０天即为较小或为负值，而迟熟类型则在现蕾后５０天才出现负值。产量以中、迟熟类型显著较高。
Study on the early, medium and late varieties of spring soybean[Glycine max(L.)Merr.] was conducted in this experiments,The results showed that the growth period (GP)dif-ference in each soybean variety existed in the length of reproductive GP after flowering. Plant height and LAI were increased most quickly between the flower bud appearing (FBA)and 10 days after that.Highest LAI was obtained in 20 days after FBA for early and medium ripening varieties,while that was obtained in 30 days after FBA for late one,SLA and LWR were rapidly decreased with the growth of soybean. There was no difference of SLA in varieties, but LWR of early ripen-ing variety was reduced quickly and that was lower in the late GP.Leaf RGR of early and medium ripening varieties was very small or even reached negative in 30 days after FBA while late type reached negative in 50 days after FBA. Higher Yields were obtained significantly in medium and late varieties.
基金
浙江省科委"八五"重点课题
关键词
春大豆
生长性状
产量
大豆
spring soybean
growth character
yield
