草地学报

草地学报 ›› 2020, Vol. 28 ›› Issue (4): 1034-1042.DOI: 10.11733/j.issn.1007-0435.2020.04.021

• 研究论文 • 上一篇    下一篇

AMF及短期增温增雨互作对植物吸收氮磷功能的影响

张慧1, 韩冰1, 董全民2, 吕进英1, 史雅楠3, 周华坤4, 邵新庆1,4   

  1. 1. 中国农业大学草业科学与技术学院, 北京, 100193;
    2. 青海省高寒草地适应性管理重点实验室, 青海 西宁, 810016;
    3. 山西省林业科学研究院, 山西 太原, 030012;
    4. 青海省寒区恢复生态学重点实验室, 青海 西宁, 810008
  • 收稿日期:2020-05-17 修回日期:2020-05-30 出版日期:2020-08-15 发布日期:2020-07-28
  • 通讯作者: 史雅楠, 邵新庆
  • 作者简介:张慧(1994-),女,硕士研究生,主要从事草地生态与恢复研究,E-mail:vghv111@163.com
  • 基金资助:
    国家重点研发计划项目（2016YFC0501902）；青海省重大科技专项（2018-NK-A2）；高寒草地-家畜系统适应性管理技术平台（2020-ZJ-T07）资助

Effects of AMF Inoculation,Short-term Warming and Increasing Precipitation on Nitrogen and Phosphorus Absorption of Plant

ZHANG Hui1, HAN Bing1, DONG Quan-min2, LV Jin-ying1, SHI Ya-nan3, ZHOU Hua-kun4, SHAO Xin-qing1,4   

  1. 1. College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China;
    2. Qinghai Provincial Key Laboratory of Adaptive Management on Alpine Grassland, Xining, Qinghai Province 810016, China;
    3. Shanxi Academy of Forestry Sciences, Taiyuan, Shanxi Province 810016, China;
    4. Key Laboratory of Restoration Ecology of Cold Area in Qinghai Province, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai Province 810008, China
  • Received:2020-05-17 Revised:2020-05-30 Online:2020-08-15 Published:2020-07-28

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摘要： 为研究气候变化是否影响植物-真菌共生关系及植物的吸收功能，本试验以青藏草原优势植物垂穗披碱草（Elymus nutans）和草地早熟禾（Poa pratensis）为研究对象，选取管柄囊霉属（Funneliformis）丛枝菌根真菌（Arbuscular mycorrizal fungi，AMF）进行室内控制试验。结果表明：增温促进了AMF和植物的共生，接种AMF及短期增温增雨互作对植物吸收氮磷功能的影响并不一致。对垂穗披碱草而言，增温增雨对其生长的土壤pH、全氮和有效磷含量均无显著影响，增雨促进了植物磷吸收（P<0.05），增温处理下接种AMF提高了植物氮磷含量（P<0.05）；对草地早熟禾而言，增温增雨提高了植物氮磷含量和土壤电导率、降低了土壤全氮含量（P<0.05），增温提高了土壤有效磷含量（P<0.05），增雨处理下接种AMF后降低了植物氮磷含量（P<0.05）。

关键词: 丛枝菌根真菌, 增温, 增雨, 氮磷吸收

Abstract: In order to know whether climate change affect plant and fungus symbiotic relationship and absorption function of the plant,dominant plants in qinghai-tibet plateau grassland Elymus nutans and Poa pratensis were selected in this study,and Funneliformis was inoculated in an artificial climate chamber. Results showed that:warming promoted the symbiosis between AMF and plants,different plants responded differently to short-term warming and increasing precipitation in terms of nitrogen and phosphorus absorption. For Elymus nutans,increasing precipitation (P) promoted the uptake of phosphorus significantly (P<0.05),and warming plus increasing precipitation (WP) had no effects on soil pH,total nitrogen or available phosphorus content,moreover,inoculating AMF under warming treatment (W) increased plant's nitrogen and phosphorus content (P<0.05). For Poa pratensis,WP treatment increased plant's N and P content and soil electrical conductivity,decreasing soil total N content (P<0.05),and W treatment increased soil available P content (P<0.05),moreover,inoculating AMF decreased plant's N and P content under P treatment (P<0.05).

Key words: Arbuscular mycorrhizal fungi, Warming, Precipitation enhancement, Nitrogen and phosphorus absorption

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