All organs, above and under ground, of a fruit tree is an unified organic body, In cold and dry regions, the growing period duration is short.

His father came back, refused to let her do any housework, and, like child care like food and clothing to worry about cold warm to her, on time delivery of water to send to her medicine.

The sowing biology yield and dry matter yield of silage maize in Daqing cold region were the highest in May 8 ~ 15th.