攀西安宁河谷南抗杨、四季杨引种试验初报

南抗杨和四季杨是近年来选育出的速生树种新品种 ,我们于 2 0 0 1年在攀西地区首次引种进行扦插和造林试验。结果表明 :两树种在攀西地区安宁河流域 1 5 0 0～ 2 1 0 0m河谷地段适应性强、生长旺盛。但南抗杨扦插生根能力高于四季杨和滇杨 ,2a生南抗杨幼树根径生长量高于四季杨 2 2 1 % ,其高生长量大于四季杨的 30 3% ,2a生幼树根生物产量高于四季杨的 5 0 3%。两树种在安宁河流域能较好地适生 ,可以大面积推广。

Preliminary Report on Introduction of Nankang Poplar and Evergreen Poplar at Anning Valley of Panxi

Nankang Poplar and evergreen poplar are new fast-growing tree species of new varieties selectively breeded out in recent years. In 2001, we firstly introduced these varieties and carried on cutting and afforestation tests at Panxi District. The result showed that these two species have strong adaptability and vigorous growth in 1 500-2 100 m above sea level of valley plot of the Anning river basin in Panxi district, but root-producing capacity from Nankang poplar's cutting is higher than this from evergreen poplar and Yunan poplar's, growth increment of root diameter for two-years old Nankang poplar's young tree is 22.1% higher than this for evergreen poplar, growth increment of height for Nankang poplar is 30.3% larger than for evergreen poplar, root biomass of two years-old young tree from Nankang poplar is 50.3% higher than those from evergreen poplar. Both of such two tree species can adapt to grow well at Anning River watershed so,they could be extended in large scale.