shuǐ / dào / de / yè / qiào / bāo / guǒ / zhe / jīng / gǎn / qǐ / dào / bǎo / hù / zuò / yòng水稻的叶鞘包裹着茎秆,起到保护作用。The leaf sheath of rice wraps around the stem and provides protection.