草原与草坪2025，Vol.45Issue(2)：83-90,8.DOI:10.13817/j.cnki.cyycp.2025.02.009
不同施肥处理对退化高寒草甸植被群落特征及牧草营养价值的影响
Effects of different fertilization treatments on vegetation community characteristics and nutritional value of degraded alpine meadows
摘要
Abstract
[Objective]Fertilization is an important measure for the prevention and restorationof degraded alpine grassland.[Method]There are six fertilization treatments were set up,including no fertilization(CK),nitrogen and phosphorus compound fertilizer 600 kg/hm2(PM),microbial fertilizer 75 kg/hm2(BM),nitrogen and phosphorus compound fertilizer 600 kg/hm2+microbial fertilizer 75 kg/hm2(PIBM),nitrogen and phosphorus compound fertil-izer 450 kg/hm2+microbial fertilizer 75 kg/hm2(PIIBM),nitrogen and phosphorus compound fertilizer 300 kg/hm2+microbial fertilizer75 kg/hm2(PIIIBM),in order to clarify the restoration effect of nitrogen and phosphorus fertilizer combined with microbial fertilizer on degraded alpine meadows,and feasibility of fertilizer reduction after the applica-tion of microbial fertilizer,to screen the suitable fertilization scheme for the restoration of alpine meadows in the Qil-ian Mountains,and plant community characteristics and nutritional value of different fertilization treatment on by field community fertilization experimental method were studied.[Result]The characteristics of vegetation communities and the production performance of plant species under different fertilization treatments were studied by field commu-nity experimental method,and the following conclusions were obtained:Compared with no fertilization,the applica-tion of nitrogen and phosphorus fertilizer and nitrogen and phosphorus fertilizer combined with microbial fertilizer can effectively increase the average height and aboveground biomass of plant communities in degraded alpine meadows,and PIBM、PIIBM treated aboveground biomass increased by 1.37 and 1.35 times compared with CK.It also can im-prove the diversity and stability of plant community structure,and improve the dominance of edible forages such as grasses and legumes in the community.Under the conditions of this study,the content of NDF and ADF in plants was significantly reduced by nitrogen and phosphorus fertilizer and microbial fertilizer,and the CP content of Medicago ru-thenicaandGentiana stramineawas effectively increased.[Conclusion]Nitrogen and phosphorus compound fertilizer 450 kg/hm2+microbial fertilizer 75 kg/hm2 had a significant effect on the improvement of vegetation community char-acteristics and nutritional value in degraded alpine grassland.关键词
高寒草甸/草地退化/菌肥/氮磷复合肥/植被特征/营养价值Key words
alpine meadow/grassland degradation/microbial fertilizer/nitrogen and phosphorus compound fertil-izer/vegetation characteristics/nutritional value分类
农业科技引用本文复制引用
达朝玲,李亚娟,胡蕊梅,鱼小军,徐长林,史志翯,徐晶晶..不同施肥处理对退化高寒草甸植被群落特征及牧草营养价值的影响[J].草原与草坪,2025,45(2):83-90,8.基金项目
甘肃省草原生态修复治理科技支撑项目(2021) （2021）
甘肃省自然科学基金(20JR5RA036) （20JR5RA036）
