施肥对退化草地植被生产力和群落结构特征的影响

doi:10.11733/j.issn.1007-0435.2024.09.031

草地学报 ›› 2024, Vol. 32 ›› Issue (9): 2973-2981.DOI: 10.11733/j.issn.1007-0435.2024.09.031

• 技术研发 • 上一篇

施肥对退化草地植被生产力和群落结构特征的影响

李泽藩¹, 张振豪¹, 董书明², 杨明涛³, 曹子薇³, 戎郁萍¹

1. 中国农业大学草业科学与技术学院, 北京 100193;
2. 内蒙古盎然农业发展有限公司, 内蒙古锡林浩特 026000;
3. 锡林浩特市知牧牧民养殖专业合作社, 内蒙古锡林浩特 026099

收稿日期:2024-02-13 修回日期:2024-04-10 发布日期:2024-10-09
通讯作者: 戎郁萍,E-mail:rongyuping@cau.edu.cn
作者简介:李泽藩(2001-),男,汉族,广东东莞人,硕士研究生,主要从事草地生态的研究,E-mail:lizefan@cau.edu.cn
基金资助:
中央引导地方(内蒙古)科技发展资金项目(2022ZY0049);国家现代农业产业技术体系(CARS-34)资助

Effects of Fertilization on Productivity and Community Structure of Degraded Grassland

LI Ze-fan¹, ZHANG Zhen-hao¹, DONG Shu-ming², YANG Ming-tao³, CAO Zi-wei³, RONG Yu-ping¹

1. College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China;
2. Inner Mongolia Angran Agriculture Development Co., Ltd, Xilinghot, Inner Mongolia 026000, China;
3. Zhimu Herdsmen Breeding Professional Cooperative, Xilinghot, Inner Mongolia 026099, China

Received:2024-02-13 Revised:2024-04-10 Published:2024-10-09

摘要/Abstract

摘要： 草地退化可降低土壤肥力，减少牧草产量，从而影响草地的生态系统服务功能。本研究对羊草(Leymus chinensis)+大针茅(Stipa grandis)中度退化草地进行7种肥料种类(尿素、微生物菌剂、蚯蚓叶面肥、富硒叶面肥、羊粪发酵有机肥、富硒有机肥、腐殖酸有机肥)和4种施肥水平(对照、低浓度、中浓度、高浓度)的施肥研究，系统评价了施肥对退化草地植被生产力和群落结构的影响，发现有机肥和叶面肥均可以显著改善草地的地上和地下生物量(P<0.05)，对群落的物种多样性无显著影响。施用尿素虽然可以显著提高草地生物量(P<0.05)，但降低了物种多样性(P<0.05)。基于主成分分析的综合评价表明，富硒叶面肥对中度退化草地的改良效果最好，最佳施肥浓度为中等浓度水平。本研究为中度退化草地施肥恢复提供了一定的理论依据。

关键词: 退化草地, 有机肥, 叶面肥, 肥料类型, 综合评价

Abstract: The degradation of grasslands leads to the decline in soil fertility,the reduction in forage yield,and impacts the ecosystem services of grasslands. This study systematically evaluated the effects of fertilization on productivity and community structure of degraded Leymus chinensis and Stipa grandis grasslands. Seven types of fertilizers (urea,microbial agent,vermicompost,se-rich foliar fertilizer,sheep manure fertilizer,Selenium-rich organic fertilizer,humic acid organic fertilizer) and four fertilization levels (control,low level,medium level,high level) were applied. The results indicated that both organic and foliar fertilizers significantly improved above-ground and below-ground biomass of grassland (P<0.05),with no significant impact on species diversity. Although urea application significantly increased grassland biomass (P<0.05),it reduced species diversity (P<0.05). Comprehensive evaluation based on principal component analysis revealed that se-rich foliar fertilizer had the best ameliorative effect on degraded Leymus chinensis grasslands,and the optimal fertilizer concentration was medium. This study provided a theoretical basis for the restoration of moderately degraded grassland by fertilization.

Key words: Degraded grassland, Organic fertilizer, Foliar fertilizer, Fertilizer type, Comprehensive assessment

中图分类号:

S812.4

李泽藩, 张振豪, 董书明, 杨明涛, 曹子薇, 戎郁萍. 施肥对退化草地植被生产力和群落结构特征的影响[J]. 草地学报, 2024, 32(9): 2973-2981.

LI Ze-fan, ZHANG Zhen-hao, DONG Shu-ming, YANG Ming-tao, CAO Zi-wei, RONG Yu-ping. Effects of Fertilization on Productivity and Community Structure of Degraded Grassland[J]. Acta Agrestia Sinica, 2024, 32(9): 2973-2981.

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施肥对退化草地植被生产力和群落结构特征的影响

Effects of Fertilization on Productivity and Community Structure of Degraded Grassland

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