苗期试验表明,杉木不同地理种源种子发芽率、苗木生长量、物候期、生长节律、生物产量等都存在明显差异,这初步说明了进行种源选择的必要和可能。但这种随地理位置不同产生的差异稳定性如何?苗期表现优良的种源在造林后是否具有稳定的优势,较本地种源增益又多大?更要地看林期表现如何,才能最后为种源选择作出合理评价和结论,以及为准确 Seedling experiments showed that there were significant differences in germination rate, seedling growth rate, phenophase, growth rhythm, and biological yield of different geographical provenance seed of Cunninghamia lanceolata, which preliminarily explained the necessity and possibility of seed selection. However, this difference with the geographical location of the different stability? Seed provenance provenance in afforestation after a stable advantage, compared with the local provenance gain? To look at the performance of the forest period, the last to Source selection to make reasonable judgments and conclusions as well as accurate