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通过6个省内28个种子园的数据分析,发现位于杉木不同产区(北部产区、中心产区、南部产区)的种子园,其开花结实年龄、结实量、种子播种品质等均存在较有规律的差异。中心产区无性系一般开花结实迟于北部产区的无性系;产量和种子品质的年变幅大;历年平均产量、球果出籽率和种子发芽率显著低于北部产区。就上述趋势对影响杉木种子生长发育的主要环境因子进行了理论上的讨论分析,并提出杉木种子园园址选择的初步意见。
Through the data analysis of 28 seed orchards in 6 provinces, it was found that seed orchards located in different areas of Cunninghamia lanceolata (northern, central and southern producing areas) had their age of flowering and fruiting, seed sowing quality and so on More regular differences. The average climacteric flowering rate in the central producing areas was later than that in the northern producing areas. The annual variation of grain yield and seed quality was large. The annual average yield, seed germination percentage and seed germination rate were significantly lower than those in the northern area. On the above trend, the main environmental factors affecting the growth and development of Chinese fir seed were theoretically discussed and analyzed, and the preliminary opinions on the choice of Chinese fir seed orchard site were proposed.