山东省林业科学研究所造林育苗组59年春季在夏县苗圃进行了加拿大杨速生丰产林的试验。据最近调查其效果良好。试验地选择在夏县苗圃东北角河旁的弃耕地上,为壤土:微碱性 PH 值为7.5—8.海拔410米,地下水位约3米,旱霜期十月下旬,晚霜期四月上旬,无霜期为180天,一般雨季多 Shandong Forestry Research Institute afforestation nursery group 59 spring in Xiaxian nursery Canada poplar fast growing forest experiment. According to a recent survey of its effectiveness. Experimental selection of the Xiaxian nursery northeast corner of the abandoned farmland, as loam: slightly alkaline PH value of 7.5-8. 410 meters above sea level, water table is about 3 meters, dry frost period in late October, late frost period in early April , Frost-free period of 180 days, the general rainy season