应用GA_3、MH和CCC 3种植物生长调节剂对杉木进行喷布试验。结果表明:与对照相比,结果枝数、单果鲜重、出籽率、千粒重、发芽率、发芽势和优良度均有较大幅度的提高,涩粒率有所减少。尤以喷布GA_3100×10~(-6)、150×10~(-6)的效果为最佳,其千粒重和发芽率分别提高13%和30%以上;CCC 2000×10~(-6)的效果次之,此剂既能提高母树的种子品质,又能起到矮化树干的作用,证明它在林木种子园建设中是一种很有应用前景的植物生长调节剂。 Application of GA_3, MH and CCC three plant growth regulators on Chinese fir spray test. The results showed that compared with the control, the number of branches, the fresh weight of single fruit, the seed yield, the 1000-grain weight, the germination rate, the germination potential and the fineness all increased greatly and the astringent grain rate decreased. Especially, the effect of spraying GA_3100 × 10 ~ (-6) and 150 × 10 ~ (-6) was the best, and the 1000-grain weight and germination rate increased by 13% and 30% respectively. The CCC 2000 × 10 -6, The second effect, this agent can improve the seed quality of the mother tree, but also play the role of dwarf tree trunk, prove it in the construction of tree seed orchard is a promising plant growth regulator.