一、言前我所于五十年代开始,开展了杨树良种的选育工作,选育抗寒、抗旱、耐瘠薄的速生品种,对我市的杨树造林具有十分重要的意义.昭林六号杨获得成功就是一例.昭林6号杨是1964年春我们应用人工有性杂交技术,以赤峰杨为母本,美杨、加拿大杨、青杨为父本,进行多父授粉,在杂种一代中以单株进行选择形成的无性系,又经 First, the words I started in the fifties, carried out the breeding of poplar varieties, breeding cold-resistant, drought-resistant, infertile fast-growing varieties, the city of poplar afforestation is of great significance .Zhao Lin The success of the sixth Yang is an example .Zhao Lin No. 6 Yang is the spring of 1964 we use artificial sexual hybridization techniques toChifengYang as the mother, the United States Yang, Canada Poplar, Green Poplar as the father, multi-pollination, hybrids Generation of single plants to form a clonal selection, and by