【摘要】 采用割除堆积法与大穴整地等配套技术,在湖南城步和溆浦两县石漠化等造林困难地上营造川黔紫薇应用示范林,结果表明:城步县示范林3年生树高、地径年均生长量分别为117 cm和1.82 cm,最大单株树高、胸径年均生长量分别达161 cm和1.87 cm,造林成活率96.3%,保存率91.1%;溆浦县示范林3年生树高、地径年均生长量分别为122 cm和1.92 cm,造林成活率95.1%,保存率90.4%。川黔紫薇适应性强,长势旺,生长快,是轻中度石漠化等造林困难地植被恢复的优良树种。更多还原

【Abstract】 Using a set of comprehensive afforestation technique such as accession-accumulation land cleaning method and large-dug-hole land preparation etc.,the application demonstration forest of Lagerstroemia excelsa were constructed in rocky desertification difficult afforestation land in Chengbu and Xupu of Hunan Province. The results showed as follows: the average annual growth of height and ground diameter of 3-year-old Lagerstroemia excelsa in Chengbu County was 117 cm and 1. 82 cm respectively,and the highest average annual growth of individual tree’s height and DBH was 161 cm and 1. 87 cm respectively,the afforestation survival rate was 96. 3% and the preservation rate was 91. 1% . The average annual growth of height and ground diameter of 3-year-old Lagerstroemia excelsa in Xupu County was 122 cm and 1. 92 cm respectively,and the afforestation survival rate and preservation rate was 95. 1% and 90. 4% respectively. With strong adaptability,fast and strong growing ability,Lagerstroemia excelsa is a good tree species for vegetation restoration in rocky desertification difficult afforestation land.更多还原