1, followed by clearing spruce dead branches; In the dormant period of forsythia suspensa, plastic pruning is mainly used to prune weak branches and sprouting branches.

2. Whether spruce or birch, lignin in the intercellular layer of cell corner or secondary wall can easily react with chlorine.

Daniel, the place you mentioned is in Yunshan Ping.

4. The main varieties are Korean pine, spruce, fir, Betula alnoides, Primula, Cercidiphyllum, etc.

5. The green new branches of pine and fir in the forest meet with the hooked branches of white birch in bud, competing for beauty, just like the bride to be married in the drizzle, with a shy face and graceful appearance.

6. The second phase of the project started in March this year. Up to now, cypress, cedar, juniper, spruce and other trees and shrubs 1 1050 have been planted.

7. Probably at the beginning of the afternoon, the two families crossed the winding path. On both sides of the road are endless spruce and moss-green Danny. Crick's vines. This place is 50 kilometers east of the city.

8. The chemical compositions of spruce and Abies odorata wood and their extracts were studied, and the changing laws of various chemical compositions in logs, air-dried wood, heartwood and sapwood were analyzed.

9. Spruce is tall and straight, and Erigeron breviscapus, black grass and Malan compete among the cliffs.

10, Kudrin is also a refuge for many tertiary surviving species such as hawthorn, Acer truncatum and cherry plum. It is the only birthplace of wild European plum, and also the beautiful homeland of Ling Xue spruce, an ancient tertiary tree species.