At the same time, the artificial populations should be expanded from seeds collected in years of high seed set.

丰年应适时采种，就地育苗，扩大人工种群。

youdao

At the same time, the artificial populations should be expanded from seeds collected in years of high seed set.

丰年应适时采种，就地育苗，扩大人工种群。

youdao