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我县1981年从江苏省泗阳县苗圃引进的63杨、69杨、72杨、214杨、45杨等六个品种,进行扦插育苗.1983年对六个品种进行重复试验,培育的苗木,供江安、富顺等县扦插,和公路造林.育苗地土壤为低山棕黄色壤土,PH6,海拔高450米,为常年育苗地,气温年平均17.4℃,极端最高温为39℃,极端最低温度为-2.2℃,年降雨量为1134.7毫米,无霜期329天,相对湿度为83%.
Six counties of 63 Yang, 69 Yang, 72 Yang, 214 Yang and 45 Yang introduced from nursery of Siyang County, Jiangsu Province in 1981 were planted in our county in 1983. Repeated experiments were conducted on six varieties in 1983, nurturing seedlings, For Jiang’an, Fushun and other county cuttings, and highway afforestation. Breeding land of low mountain brown and yellow loam soil, PH6, 450 meters above sea level, perennial nursery, the annual average temperature of 17.4 ℃, the extreme maximum temperature of 39 ℃, the extreme minimum Temperature of -2.2 ℃, the annual rainfall of 1134.7 mm, 329 days frost-free period, the relative humidity of 83%.