【摘要】 为了筛选出最适宜南方低山丘陵区种植的泡桐品种及最佳造林技术,在湖北省京山市虎爪山林场采用品种、密度、造林模式等三因素试验设计研究不同品种、密度、造林模式及其互作效应对泡桐幼林生长的影响。结果表明:不同造林密度、造林模式、品种及其互作效应对泡桐胸径、树高、单株材积生长均有显著影响,其中品种对泡桐生长量影响最大,均存在极显著差异;在较小的造林密度下,随造林密度增大,泡桐平均胸径、树高、单株材积及蓄积量均有所增加;宽行窄株（B2）造林模式下,泡桐平均胸径、树高、单株材积最大;中桐1号（C1）在所有品种中表现最为优良。因此,综合考虑各项因素,在南方低山丘陵区推广种植泡桐优先选择的品种为中桐1号,宜采用330株·hm^-2造林密度及宽行窄株造林模式,最佳处理组合为A2B2C1。更多还原

【Abstract】 To screen the superior varieties of Paulownia and the best afforestation technology for planting in the hilly area of southern China.The effects of different varieties, densities, afforestation models and their interaction effects on the growth of young Paulownia were studied in the Huzhao Mountain Forest Farm of Jingshan City, Hubei Province by using three factors.Results showed that different afforestation densities, afforestation models, varieties and their interaction effects had significant differences on DBH, tree height and individual volume growth of Paulownia, among which varieties had the largest effect on the growth of Paulownia with extremely significant differences(P<0.01).The mean DBH, tree height, individual volume and volume of Paulownia increased with the increase of afforestation density.Under the afforestation mode of B2, the average DBH, tree height and individual volume of Paulownia were the largest.The variety of C1 showed the best performance among all varieties.Taking all factors into consideration, the C1 is the preferred variety for promotion and planting in the hilly area of southern China, and the afforestation density of 330 trees/hm~2 and the afforestation mode of B2 should be adopted, and the best combination of treatment is A2 B2 C1.更多还原