Specific root length was decreased with the evolution of the cultivars at the mid-tillering stage, and showed no significant differences among the four types of cultivars at other growth stages.

在分蘖中期，随品种演进，比根长显著降低，但在生育进程中，各类型间无显著差异。

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Specific root length was decreased with the evolution of the cultivars at the mid-tillering stage, and showed no significant differences among the four types of cultivars at other growth stages.

在分蘖中期，随品种演进，比根长显著降低，但在生育进程中，各类型间无显著差异。

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