草业学报2025，Vol.34Issue(7)：132-144,13.DOI:10.11686/cyxb2024327
外源添加物对三江源高寒草甸苔藓结皮快速培育的影响
Effects of exogenous additives on the rapid cultivation of moss crusts in alpine meadows of the Three-River-Source region,China
摘要
Abstract
Establishment of moss crusts plays an important role in the conservation and restoration of alpine meadows in the Three-River-Source region.This research investigated methods for more rapid moss crust establishment.An orthogonal,full factorial experimentally design was used to investigate the effects of nutrient factors,a companion fungus and the plant growth regulator thidiazuron(TDZ)on the growth of moss crusts.It was found that:1)The addition of the nutrient factor carbon(C)significantly inhibited the height of the moss crust,and the addition of nitrogen(N)and phosphorus(P)had significant effects on the coverage and height of the moss crust.2)Fungus addition and TDZ supplementation resulted in significant increase in plant height of the moss crust(P<0.05),and TDZ had an inhibitory effect on crust cover;3)The interaction of TDZ with actinomyces had some positive effects on the cultivation of moss crust;4)In the complete combination experiment,the optimal factor combination for rapid cultivation of alpine meadow in the Three-River-Source region was Bacillus megaterium(1 g·kg-1 substrate)+distilled water.After 70 days growth in an artificial climate chamber under this treatment the moss crust cover was 90.35%,plant density was 31.39 plants·cm-2,plant height was 1.86 mm and chlorophyll a content was 7.39 μg·cm-2,respectively.In conclusion,the moss crust cultivation process in the Three-River-Source region was greatly affected by exogenous factors,and the growth was better with the addition of B.megaterium,which accelerated the establishment moss crust in this experiment.关键词
三江源/苔藓结皮/养分因子/菌类/植物生长调节剂Key words
the Three-River-Source region/moss crust/nutrient factors/fungus/plant growth regulator引用本文复制引用
郭龙欣,张铭洋,杨永胜,庞博,张振华,张秀娟..外源添加物对三江源高寒草甸苔藓结皮快速培育的影响[J].草业学报,2025,34(7):132-144,13.基金项目
中国科学院青海省人民政府三江源国家公园联合研究专项(LHZX-2021-01)和青海省应用基础研究项目(2022-ZJ-716)资助. （LHZX-2021-01）
