春后进入营养生长与生殖生长并进期服系活力增高。

After spring the vegetative growth and reproductive development are all last, so the roots vigour increases.

youdao

春后进入营养生长与生殖生长并进期服系活力增高。

After spring the vegetative growth and reproductive development are all last, so the roots vigour increases.

youdao