可作为北方寒地稻作区的施肥技术。

This method of fertilizing can be used in the cold region in North China.

youdao

冰冻三尺，非一日之寒。更加努力地学习，更加勤奋地操练。

Rome wasn't built in a day. Work harder and practice more.

youdao

冰冻三尺，非一日之寒。更加努力地学习，更加勤奋地操练。

Rome wasn't built in a day. Work harder and practice more.

youdao