The yield increased firstly and then decreased with increasing of transplanting seeding age.
产量随着移栽秧龄增大先升高后降低。
The yield decreased while increased the seeding density with the same transplating seeding age;
同一秧龄不同播种密度处理间，产量随密度的增加而减小；
So, the quality of seedling reduced with the increase of seeding density and transplanting seeding age.
随着秧龄的增大，不同播种密度伺的差异越大；
And with the increase of transplanting seeding age, the more influence of seeding density to the growth period was aggrandizement.
并且随着秧龄的增大，播种密度对生育期的影响增大。
Resistance of rice on seedling age and quantity was experimented with based on the design of two factors (seeding time and quantity) and tree levels.
采用播期和播量二因素三水平随机试验设计，研究了水稻秧龄和播量在抗逆方面的作用。
Screened leaf age and MDA content identification indexes of cold tolerance in seeding stage, photosynthetic rate and SOD activity were screened in flowering stage.
在苗期筛选出了叶龄、MDA两个耐冷性鉴定指标，在开花期筛选出了光合速率和SOD活性两个耐冷性鉴定指标。
Screened leaf age and MDA content identification indexes of cold tolerance in seeding stage, photosynthetic rate and SOD activity were screened in flowering stage.
在苗期筛选出了叶龄、MDA两个耐冷性鉴定指标，在开花期筛选出了光合速率和SOD活性两个耐冷性鉴定指标。
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