中南林业科技大学学报2026，Vol.46Issue(6)：130-139,10.DOI:10.14067/j.cnki.1673-923x.2026.06.013
复合措施对祁连山温性草地植物群落特征及牧草营养品质的影响
The effects of combined measures on the characteristics of plant communities and the nutritional quality of forage in the temperate grasslands of the Qilian mountains
摘要
Abstract
[Objective]The restoration and improvement of the degraded natural grassland ecosystem in the Qilian mountains rely heavily on the strong support of composite measures.This study aims to enhance grassland productivity and forage quality in the Qilian mountains,providing technical references for ecological restoration.[Method]Compound measures for grassland improvement,including grass seed combination reseeding,reseeding with grass seed mixtures+compound fertilizer+pest control,were adopted to investigate their effects on species diversity,grassland productivity,and forage nutritional value in the grassland ecosystem.[Result]1)After adopting composite measures,the species composition of the temperate grassland plant community in the northern foothills of the Qilian mountains significantly improved compared to the control grassland;the average vegetation height and grass yield also significantly increased by 20.9%and 56.8%,respectively.2)After adopting the combined measures of"Poa pratensis+Elymus nutans+Dongnong 1 alfalfa"plus"Agropyron cristatum"or"Bromus inermis",the Shannon-Wiener diversity index of the community significantly increased compared to the control.The combined measures of"Poa pratensis+Elymus nutans"plus"Dongnong 1 alfalfa+Agropyron cristatum"or"Elymus sibiricus+Bromus inermis"followed by the application of nitrogen,phosphorus,potassium compound fertilizer and nicotine-matrine insect control measures significantly increased the Pielou evenness index and Margalef richness index.The Simpson ecological dominance index and Simpson diversity index of the community in the experimental area showed no significant difference compared to the control;3)After adopting the combined measures of"Poa pratensis+Elymus nutans"plus"Dongnong 1 alfalfa+Elymus sibiricus"or"Dongnong 1 alfalfa+Agropyron cristatum"or"Agropyron cristatum+Ganyin 1 rye",the crude protein content of the grassland forage significantly increased compared to the control,by 30.2%,19.8%and 32.7%,respectively.After adopting the combined measures of"Poa pratensis+Elymus nutans+Dongnong 1 alfalfa"plus"Ganyin 1 rye"or"Elymus sibiricus"or"Agropyron cristatum"followed by the application of nitrogen,phosphorus,potassium compound fertilizer and nicotine-matrine insect control measures,the crude protein content of the grassland forage significantly increased compared to the control,by 19.8%,47.7%and 18.0%,respectively.[Conclusion]The combination of"Kentucky bluegrass+Elymus nutans+Dongnong No.1 alfalfa+Agropyron cristatum"and the application of nitrogen,phosphorus,and potassium compound fertilizer and nicotine-matrine insect control measures performed optimally,significantly enhancing grassland productivity and improving grassland quality,greatly increasing grassland carrying capacity,and providing a scientific basis for the restoration and management of the Qilian mountain grassland ecosystem.关键词
补播/施复合肥/防虫/群落特征/营养品质Key words
reseeding/applying compound fertilizer/pest control/community characteristics/nutritional quality分类
农业科技引用本文复制引用
雷军,王军,于伟华,权金鹏,闫春鸣,赵玉红,权雅茹,成彩霞,刘明龙,苗毓鑫,兰晓东..复合措施对祁连山温性草地植物群落特征及牧草营养品质的影响[J].中南林业科技大学学报,2026,46(6):130-139,10.基金项目
甘肃省省级生态文明建设重点研发专项(24YFFG002) （24YFFG002）
甘肃省自然科学基金项目(25JRRG028) （25JRRG028）
中央财政林草科技推广示范项目(甘[2023]ZYTG017 号) （甘[2023]ZYTG017 号）
张掖市市级科技计划项目(ZY2025KY05). （ZY2025KY05）
