论文部分内容阅读
根据来自粤北、粤东、粤中、珠江三角洲和潮汕沿海地区的黎蒴半同胞家系子代测定林4年生和5年生树高、胸径等生长性状,分析比较以上5个局部种源的生长差异。方差分析结果表明,4年生时河源东江林场测定林的胸径和梅州梅南林场测定林的树高、胸径和单株材积在种源间存在显著差异;5年生时仅梅州试点的胸径和单株材积在种源间存在较显著差异。分地点对参试种源进行评定和选择,结果表明粤东种源在两个地点的早期生长较快且表现稳定,而粤中种源在河源试点也表现良好,通过种源早期选择获得的树高、胸径和单株材积的增益分别为1.30%~2.28%、2.70%~3.57%和5.45%~8.35%,对广东省黎蒴局部种源的早期生长作出了初步的比较与评价。
According to the growth characteristics of 4-year-old and 5-year-old tree height and DBH of offspring from the semi-siblings of Lipeng from southern Guangdong, eastern Guangdong, Guangdong, Pearl River Delta and Chaoshan coastal areas, the growth of the above five local provenances was analyzed difference. Analysis of variance showed that the DBH of DBH and the DBH and DBH of Meinan Forest Farm in Meizhou at 4 years old were significantly different among the provenances. There is a significant difference in volume between provenances. The results showed that the provenances in eastern Guangdong grew faster and showed stable performance in both sites, while the provenances in Guangdong and Heyuan also performed well in the Heyuan experiment, which was obtained through early selection of provenances The gain of tree height, DBH and single plant volume were 1.30% -2.28%, 2.70% -3.57% and 5.45% ~ 8.35%, respectively. The preliminary comparison and evaluation were made on the early growth of local germplasm resources of Lithocarpus japonicus in Guangdong Province.