Acta Agrestia Sinica ›› 2023, Vol. 31 ›› Issue (12): 3775-3784.DOI: 10.11733/j.issn.1007-0435.2023.12.023

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Effects of Biochar-based Fertilizer Application and Reseeding on Plant Community and Soil Nutrients in Desert Steppe

FAN Bo1,2, WANG Zhan-yi1,2, LIU Peng-bo1, ZHAO Xiang-lin1, LI Hai-jing1, WANG Cheng-jie1   

  1. 1. College of Grassland, Resources and Environmental Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010010, China;
    2. Key Laboratory of Grassland Resources, Ministry of Education, Hohhot, Inner Mongolia 010018, China;
    3. Forest and Grassland Bureau of Arong County, Hulun Buir City, Inner Mongolia 021000, China;
    4. Sunite-Zuo County Committee of the Chinese Communist Party, Xilin Gole, Inner Mongolia 026000, China
  • Received:2023-04-13 Revised:2023-06-10 Online:2023-12-15 Published:2024-01-03

生物炭基肥和补播对荒漠草原植物群落和土壤养分的影响

范博1,2, 王占义1,2, 刘鹏博1, 赵向玲1, 李海菁1, 王成杰1   

  1. 1. 内蒙古农业大学草原与资源环境学院, 内蒙古 呼和浩特 010010;
    2. 内蒙古农业大学草原资源教育部重点实验室, 内蒙古 呼和浩特 010018;
    3. 呼伦贝尔市阿荣旗林业和草原局, 内蒙古 呼伦贝尔 021000;
    4. 中共内蒙古自治区苏 尼特左旗委员会组织部, 内蒙古 锡林郭勒盟 026000
  • 通讯作者: 王占义,E-mail:zhanyiwang2006@163.com
  • 作者简介:范博(1995-),男,汉族,内蒙古呼和浩特人,硕士研究生,主要从事草地资源管理研究,E-mail:2241619130@qq.com
  • 基金资助:
    国家自然科学基金(32160331);中央引导地方科技发展基金(2021ZY0020);内蒙古自治区“科技兴蒙”国际合作引导项目(2021CG0020)资助

Abstract: Fertilization and reseeding are the main measures to improve the quality of degraded grassland. Four treatments were applied in a degraded grassland of desert steppe:control (CK),reseeding (CP),biochar-based phosphate fertilizer application (CB) and biochar-based phosphate fertilizer application plus reseeding (CPB). The total density, average height, total coverage, total aboveground biomass of plant community,soil organic carbon,available phosphorus and total nitrogen were measured in all treatments. The results showed that compared with CK,CB treatment significantly increased the proportion of dominant species in the community and increased the content of soil organic carbon and total phosphorus content (P < 0.05). The Simpson dominance index of the plant community in CP treatment was significantly greater than that of CB treatment (P < 0.05). There was a significant negative correlation between plant species richness and the content of soil available phosphorus,organic carbon and pH value (P < 0.05). Based on two years of experimental data,it can be concluded from this study that in compared with the reseeding treatment,the application of biochar-based phosphate fertilizer could improve the main nutrients of soil and vegetation status of the desert steppe in a short period.

Key words: Desert steppe, Diversity index, Soil nutrients, Redundancy analysis

摘要: 施肥和补播是改良退化草原的主要措施。本文以荒漠草原退化草地为研究对象,共设四个处理[对照(CK)、补播(CP)、施生物炭基磷肥(CB)与施生物炭基磷肥+补播(CPB)],测定植物群落总密度、平均高度、总盖度、地上总生物量以及土壤有机碳、速效磷和全氮含量等指标。结果表明:与CK相比,CB处理显著增加了群落优势种比例且提高了土壤有机碳和全磷含量(P<0.05);CP处理的Simpson优势度指数要显著高于CB处理(P<0.05);植物群落物种丰富度与土壤速效磷含量、pH值和有机碳含量之间显著负相关(P<0.05)。本研究基于两年的试验数据表明:与补播处理比较,施生物炭基磷肥处理能够较快的提高荒漠草原土壤主要养分含量和改善植被状况。

关键词: 荒漠草原, 多样性指数, 土壤养分, 冗余分析

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