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小×美加中杨是青杨与黑杨派间杂种,我所1971年从昭盟林研所引进.经过筛选栽培,现在已成林12亩,有些植株已经开花结实.优良单株10年生树高12米,胸径23厘米,单株材积0.24立方米.该品种试验重点在锡林浩特地区,白旗、兰旗、东苏旗、东乌旗等地也有定植,经过12年的品种对比试验,定植观察,具有生长迅速、耐寒、耐干旱、耐瘠薄、适应性强等优良特性.照片1为小×美加中杨[右侧]与比它大六年的小青杨
Small × The United States and Canada in the middle Yang Yang Poplar and black sent interoffice, I was introduced in 1971 from Zhao League Institute .After screening and cultivation, has now become a forest 12 acres, some plants have flowering and fruiting. 12 meters high, 12 cm in diameter and 23 cm in diameter at a diameter of 0.24 cubic meters per plant. The trial focuses on Xilinhot region, white flag, blue flag, East Su Flag and East Wu Flag. After 12 years of variety comparison experiment, , With the rapid growth, cold tolerance, drought resistance, infertility, adaptability and other excellent features. Photo 1 for the United States and Canada Yang [small] on the right side and six years younger