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研究结果表明，群众杨、少先队杨、八里庄杨、俄罗斯杨为农防速生丰产用材林的优良品种，这些树种在土壤有机质1％以上，土壤田间持水量全年保持在70％时（年浇水8次），均可达到速生丰产的目的，其综合经济效果（产出与投入之比）在12．0：1—8．1：1之间，直接经济效果9．2：1─5．6：1．即有较高的经济效益，又有较好的防护效益．
The results showed that Populus Young, Young Pioneer Young, Balizhuangyang and Russian Poplar were the best varieties for fast-growing agroforestry. The species of these trees were above 1% of soil organic matter and the field water holding capacity was 70% ), Can achieve fast-growing and high-yielding purposes. The comprehensive economic effect (ratio of output to input) is between 12.0: 1-8.1: 1 and the direct economic effect is 9.2: 1─5.6: 1. That is, a higher economic efficiency, but also a better protective benefits.