不同熟期春小麦品种根系动态变化特点研究

Study on Dynamic Change Characteristic of Roots in Different-Maturity Spring Wheat Variety

研究了早熟、中熟、晚熟春小麦品种的根系特点及其与地上部动态变化关系,结果表明:不同熟期春小麦品种的根数、根长、根重峰值有较大的差异,晚熟品种克涝6号最大,次之为中熟品种克丰3号,早熟品种克涝3号最小,而且达到极显著水平;不同品种生育期根冠比均在拔节期最大,然后呈下降趋势,中、晚熟春小麦品种不仅具有较多的根系,而且还有较繁茂的地上部的特征。

The early-maturing,the middle-maturing and the late-maturing varieties in spring wheat were selected as experimental materials for studying the roots characteristic,roots and ground part dynamic change relations.The results showed: peak values of root number,root length,root weight were bigger different for different maturities in spring wheat varieties,Kelao 6 with late-maturing was the largest,Kefeng3 with middle-maturing was middle,Kelao 3 with early-maturing was the lest one,reaching very significant level,ratio of root coronal for growing period of different variety was the largest in jointing stage,then trend of root coronal ratio was down,the middle-maturing and the late-maturing spring wheat varieties having more roots,moreover they having characteristic of more luxuriant ground part.