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在农田林网中进行Ｉ－２１４杨、加杨、小美旱杨、北京杨４个杨树品种的造林对比试验，２０ａ生Ｉ－２１４杨的平均胸径为４２．１ｃｍ；平均树高为２７ｍ，平均单株材积为１．３６９６ｍ３，约是加杨、小美旱杨、北京杨的４～８倍。
The contrast experiment of 4 poplar varieties of I-214 poplar, Populus simonii, Populus simonii, Populus simonii and Populus simonii was conducted in farmland forest network. The average DBH of 20a poplar I-214 was 42.1 cm and the average tree height was 27 m , The average single plant volume of 1.3696m3, about plus Yang, the United States dry Yang, Beijing Yang 4 to 8 times.