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通过 3～ 5年生 2 57个杉木 (Cunninghamia lanceolata)无性系的分年度的试验测定 ,结果表明 ,参试无性系之间的遗传差异是显著的。初步筛选出的 1 5个优良无性系 ,其材积比优良家系对照平均增产 87.4% ,这对大面积推广优良无性系造林打下良好基础
The results of the annual test of 257 Cunninghamia lanceolata clones aged 3 to 5 years showed that the genetic differences among the tested clones were significant. The preliminary screening of 15 elite clones showed an increase of 87.4% in volume on average over the excellent families, which laid a good foundation for large-scale popularization of fine clonal afforestation