【摘要】 采用5株优势木对比法，对广西特色大横枝杉展开调查，探索大横枝杉的生长特性，初选优树35株，优势木175株。经统计分析，确定了大横枝杉优树选择范围：胸径和材积分别是优势木均值的207%和569%,树高大于优势木均值。根据该范围，对35株候选优树进行复选，获得大横枝杉Ⅰ级优树19株，Ⅱ级优树6株，入选率分别为54.29%和17.14%,可为大横枝杉无性系种子园营建提供优质种质材料。更多还原

【Abstract】 In order to provide a theoretical basis for the selection and breeding of improved varieties of Taxodiaceae plants, the growth of Guangxi characteristic Cunninghamia lanceolata were investigated by using five dominant tree comparison methods. A total of 35 superior trees and 175 dominant trees were selected. Through statistical analysis, the range for the selection of superior trees was determined: DBH and volume were 207% and 569% of the average value of dominant trees, respectively, and tree height was greater than the average value of dominant trees. According to this range, 35 candidate superior trees were re-selected, and 19 superior trees of grade I and 6 superior trees of grade II were obtained. The selection rates were 54.29% and 17.14%, respectively, which could provide high-quality germplasm materials for the construction of clonal seed orchard of Cunninghamia lanceolata.更多还原