短语词组短語seedling -age-type 苗齡型elasticity of seedling age 秧齡彈性young seedling age variety 短秧齡品種Transplanting seedling age 移栽秧齡different seedling age 不同苗齡seedling age at transplanting 不同移栽秧齡proper seedling age 適宜秧齡 返回 seedling age