杉木第3代家系幼林期生长表现

The growth performance of the third generation families of Cunninghamia lanceolata at young tree stage

以杉木第3代不同家系试验林为试验研究对象,调查测定其6年生时的树高、胸径指标,分析不同家系幼林期的生长表现。结果表明:6年生杉木不同家系间树高、胸径和材积差异显著,其树高均超过5.5m,在5.84~7.02m之间;胸径均超过8cm,在8.44~11.01cm之间;材积均超过0.02m3,在0.0216~0.0392m3之间。以材积为主要指标,树高、胸径为辅,对杉木第3代家系造林效果进行筛选,TF052及TF012表现较好,初期表现为适合泰宁县生长。

Taking the third generation of Chinese fir from different families of 6 years old as experimental materials,completely randomized block design test was carried out and the tree height,DBH(Diameter at Breast Height)and volume was determined and analyzed.The results showed that there were significant differences in height,DBH and volume among different families of 6-year-old Cunninghamia lanceolata.The tree height was more than 5.5 m,ranging from 5.84 to 7.02 m;DBH was more than 8 cm,ranging from 8.44 cm to 11.01 cm;volume was more than 0.02 m3,ranging from 0.0216 to 0.0392 m3.Taking volume as the main index,tree height and DBH as auxiliary factors,the afforestation effect of the third generation families of C.lanceolata was screened.The TF052 and TF012 performed better and were suitable for the growth in Taining County at the early stage.