本文通过对子代测定材料的分析,认为杉木[Cunninghamia Lanceolata(Lamb.)Hook]单株选择和群体选择效果相同。一般配合力高的优树,其子代中浓密型比例相应增大。子代增产原因,是子代中优良类型增加的结果。选用子代优良类型比例大且稳定的优树作亲本,可提高子代中优良类型比例。采用适当的良种繁育制度,将使林分中所有植株在间伐后都是优良的类型,可使产量进一步提高。 Based on the analysis of progeny materials, we concluded that the single plant selection and population selection of Cunninghamia lanceolata (Lamb.) Hook were the same. The general tree with high strength, the progeny of the corresponding increase in the proportion of dense. The reason for the increased progeny generation is the result of the increase of fine types in offspring. Selection of excellent type of offspring of large proportion and stability of the tree as a parent, can improve the type of excellent type of offspring. Adopting appropriate breeding and breeding systems will make all the plants in the stand an excellent type after thinning, which will further increase the yield.