一些栽培技术要求在成熟期尽量保持叶鞘的活性。
Some cultural practices are required to keep these leaf sheaths active during ripening stage.
轻度的植株能有正常的叶及叶鞘，但没有叶舌，叶与叶鞘的边界弥散。
Plants with a mild phenotype formed normal leaf sheaths and blades, but lacked ligules and showed diffusion of the blade-sheath boundary.
坚韧的叶鞘拱出了土壤，需要对突出体作辅助工作。
Tough sheaths push through the earth and do the backwork needed for the emergence.
应用推荐