群众杨(populus×popularis)又名小美旱,是中国林科院林业研究所以小叶杨为母本,以钻天杨和旱柳混合花粉为父本,通过有性杂交选育的优良杨树新品系,1982年通过了技术鉴定。1982年春,我所受省林业厅委托,承接了34hm~2群众杨速生丰产林的开发任务。目前林分长势良好,8年生平均树高17.6m,平均胸径20.8cm,单株材积0.2172m~3,已取得显著的经济、社会和生态效益,并为充分开发和利用辽河下游中轻度宜林盐碱地资源,普及和推广群众杨提供了技术资料,带动和扩大了群众杨的栽培。 1 试验地概况试验地设在盘山县沙岭镇(东经121°35’～122°35’,北纬40°51’～41°28’)。属半 Populus × popularis, also known as Xiao Mei-han, is a new good poplar line bred by sexual hybridization with Populus × Popularis as the female parent and Populus × Popularis as the female parent. The year passed the technical appraisal. In the spring of 1982, I was commissioned by the Provincial Forestry Department to undertake the task of developing the fast-growing and high-yield forest of 34 hm ~ 2 populace. At present, the stands are in good condition with an average tree height of 17.6m, an average diameter at breast height of 20.8cm and a single plot volume of 0.2172m ~ 3, which have achieved remarkable economic, social and ecological benefits. In order to fully exploit and utilize the Liaohe River, Forest salt and alkali resources, popularization and popularization of populace Yang provided technical information, led and expanded the cultivation of poplar. 1 The experimental site is located in Shaling Town, Panshan County (longitude 121 ° 35 ’~ 122 ° 35’, latitude 40 ° 51 ’~ 41 ° 28’ north). Is half