杨树纸浆林造林模式的研究

Afforestation models for pulp stands of poplar

为优化杨树小径材纸浆林模式,采用多分子的正交试验方法,通过对试验数据的统计分析和比较,筛选出较理想的纸浆林模式为:①立地条件中上等:A2B1C2———美洲黑杨·1666株/hm2·1m×6m·集约经营·6年主伐;A3B1C2———欧美杨·1666株/hm2·1m×6m·集约经营·6年主伐。②立地条件稍差:A2B2C2———美洲黑杨·1111株/hm2·1.5m×6m·集约经营·7年主伐;A3B2C2———欧美杨·1111株/hm2·1.5m×6m·集约经营·7年主伐。

In a bid to optimizing models of poplar pulp stands of small-sized timber, optimum models of pulp stands were selected out by means of orthogonal experimental methods and through statistical analysis and comparison of experimental data, namely, ① upper and moderated site quality: A2B1C2 - American black poplar, 1 666 stem·hm-2 , 1m×6m, intensive management, and cutting-over age of 6a; A3B1C2 - European and American poplar, 1 666 stem·hm-2, 1m×6m, intensive management, cutting-over age of 6a; ② poor site quality: A2B2C2 -American black poplar, 1 111 stem·hm-2, 1.5m×6m, intensive management, and cutting overage of 7a; A3B2C2 - European and American, 1 111 stem·hm-2, 1.5m×6m, intensive management, and cutting-over age of 7a. 