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研究出了简单易行、经济实用的落羽杉种子处理技术,可保证有胚种子全部发芽,场圃发芽率达70%以上,比对照发芽率提高30000%,开始发芽提早3～40d,发芽持续期减少35～53d。分析了落羽杉不同种源、家系、树种在种子千粒重,发芽率和苗期、幼林期生长的遗传变异。系统地掌握了落羽杉种子温床播种,芽苗移栽和容器育苗、造林的关键技术,苗木产苗量比文献高产记录增产3136%,总经济效益提高50%以上,容器苗造林成活率达100%。摸索出落羽杉无性繁殖的有效技术———夏季嫩技扦插,10～15d愈合,30～45d生根,平均成活率达90%以上。同时分析了落羽杉不同种源、家系和树种扦插成活率和生根力的遗传变异。
The simple and economical treatment of Taxodium distichum seed was developed, which can ensure the germination of all germ seeds. The germination rate of the seedbed is more than 70%, the germination rate is increased by 30,000% compared with the control, and the germination is started 3 ~ 40d earlier. Reduction of 35 ~ 53d. The genetic variation of different provenances, pedigrees and tree species of Taxodium distichum in seedling weight, germination percentage, seedling stage and young seedling stage were analyzed. Systematically grasped the key technologies of hotbed seeding, transplanting of seedlings and container seedling and afforestation of seedlings of Taxodium distichum. The seedling yield increased 3136% higher than the record of high yield in the literature, the total economic benefit increased by 50%, and the survival rate of container seedling afforestation reached 100 %. To explore the effective technology of asexual propagation of Taxodium --- Tender summer tender technology, 10 ~ 15d healing, 30 ~ 45d rooting, the average survival rate of 90%. At the same time, we analyzed the genetic variation of survival rate and rooting ability of Taxodium distichum different provenances, families and tree species.