Alder has no problems with sap , mineral streaks, dark colors or staining.
Material: Gold Plated Alder Cone, gold plated bookmark.
The alder nitrogen fixation promoted growth of the after crop.
十年生桤木林采伐迹地上,桤木固氮改良土壤,并促进后续植物的生长.
Material: Gold Plated Alder Cone, Green Chorite Crystal, gold plated bookmark.
素材: 镀金桤木球果吊饰, 绿幽灵水晶, 镀金书签.
The genetic responses of 13 alder ( Alnus cremastogyne ) provenances was evaluated for at 5 test locations.
对桤木13个种源在5个测试点进行了生长性状的遗传测定.