秧龄是一个汉语词语，读音是 yāng líng，是指水稻的幼苗在秧田中生长的时期。
产量随着移栽秧龄增大先升高后降低。
The yield increased firstly and then decreased with increasing of transplanting seeding age.
密度对产量的影响大于秧龄对产量的影响。
The regression indicated that density has more influence than seedling-age.
随着秧龄的增大，不同播种密度伺的差异越大；
So, the quality of seedling reduced with the increase of seeding density and transplanting seeding age.
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