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对广东省乐昌市山地营造的5 a生闽楠福建种源、家系联合选择实验林进行生长调查,结果表明该林分胸径、树高和单位面积蓄积分别为2.21 cm、2.60 m和2.06 m~3/hm~2,该指标符合我国林业行业标准“楠木培育技术规程”中一般栽培区的闽楠生长指标,支持该标准将广东省北部划为闽楠的一般栽培区的栽培区划。种源水平上的方差分析结果表明,种源间和区组间的胸径、树高和单位面积蓄积量均具有显著或极显著差异,说明种源和坡位对闽楠生长均具有显著影响。通过多重比较,以与最低值有显著差异的作为入选条件和项目考核指标,选出的优良种源有福建永安、政和、尤溪等3个种源,其平均单位面积蓄积量均超过3.00 m~3/hm~2。通过种源-家系联合选择方式、以高于入选种源材积平均值为入选条件,从福建永安、政和、尤溪3个种源中共选择出优良家系17个。
Growth surveys of five provenances and families from Fujian Province, Fujian Province, in the mountainous areas of Lechang, Guangdong Province, were selected to study the growth of DBH. The results showed that the DBH, tree height and area per unit area were 2.21 cm, 2.60 m and 2.06 m, respectively ~ 3 / hm ~ 2, which is in line with the growth index of Phoebe bournei in the general cultivation area in China’s forestry industry standard “Phoebe cultivation regulations ” and supports the standard to plan the cultivation area in the general cultivation area of Min Nan in Guangdong Province . Analysis of variance at provenance level showed that there was significant or extremely significant difference in DBH, tree height and stock volume per unit area between provenances and between groups, indicating that provenance and slope position had significant effects on the growth of Min Nan. Through multiple comparisons, the best provenances were selected from three provenances, Yong’an, Zhenghe and Youxi in Fujian Province, with significant differences from the lowest values as the selection criteria and project assessment indicators. The average provenances of all provenances exceeded 3.00 m ~ 3 / hm ~ 2. By means of joint selection of provenances and pedigrees, higher than the average of selected provenances, 17 elite families were selected from the three provenances of Yong’an, Zhenghe and Youxi in Fujian Province.