L-324 of America black pop-lar and L-35, W-141, I-69 of Euro-American poplar are fit to the farm-shelter forest network of alluvial sandy area of old yellow river in Shandong province.

• 山东省黄河故道冲积沙地适宜于营造农田防护林网的优良无性系为美洲黑杨类的L-324,欧美杨类的L-35、W-141、I-69等。