不同牧草品种在草甸草原生长的适应性评价  

Evaluation of the Adaptability of Different Forage Varieties Growing on Meadow Grassland

作　　者：王鹏 陈斌 顾新民 甘辉林 马垭杰 WANG Peng;CHEN Bin;GU Xin-min;GAN Hui-lin;MA Ya-jie(Zhangye Grassland Workstation,Zhangye Gansu 734000,China)

机构地区：[1]张掖市草原工作站,甘肃张掖734000

出　　处：《畜牧兽医杂志》2022年第5期248-252,共5页Journal of Animal Science and Veterinary Medicine

基　　金：甘肃省重点研发项目《祁连山北麓天然草原生态修复关键技术集成研究与示范》(项目编号:20YF8FG150)。

摘　　要：补播和混播是恢复退化草地的重要措施,但是不同区域适宜的牧草物种和混播类型并不相同,利用2020-2021年进行的不同牧草品种补播和混播试验研究了不同牧草品种在单播和混播条件下牧草的农艺性状,以筛选出最适宜的牧草品种和最佳的混播类型,为退化草地的生态恢复提供科学依据。结果表明:垂穗披碱草、扁穗冰草和小花碱茅表现出优异的农艺性状,草产量较高具有较强的区域适应性;垂穗披碱草+小花碱茅+黄花苜蓿的混播组合和草地早熟禾+新麦草+黄花苜蓿的混播组合可以显著提高草产量,是退化草地恢复的最佳混播类型;单播和混播条件下影响草产量的因素不同,单播条件下高度对草产量影响较大,混播条件下覆盖度对草产量影响较大。研究结果可以为草甸草原补播改良品种选择提供理论依据。Supplementary sowing and mixed sowing are important measures to restore degraded grassland,while the optimal forage species and mixed sowing types are different in different regions.Based on the supplementary sowing and mixed sowing experiments of different forage varieties from 2020to 2021,the agronomic properties of forage under the conditions of single sowing and mixed sowing of different forage varieties were studied,so as to find the optimal forage varieties and the suitable mixed sowing type,and to provide a scientific basis for the ecological restoration of degraded grassland.It was found that Elymus nutans,Agropyron fruticosa and Festuca arundinacea showed excellent agronomic characters,high grass yield and strong regional adaptability;the mixture of Elymus nutans+Festuca arundinacea+Medicago sativa and the mixture of Kentucky bluegrass+Psathyrostachys juncea+Medicago sativa can significantly improve the grass yield,which is the best mixed sowing type for the restoration of degraded grassland;the factors affecting grass yield under single and mixed sowing conditions are different.The height has a great influence on grass yield under single conditions,and the coverage has a great influence on grass yield under mixed sowing conditions.The results can provide a theoretical basis for the selection of supplementary sowing varieties in meadow grassland.

关 键 词：草甸草原 单播品种 混播类型、农艺性状、草产量 

分 类 号：S812.6[农业科学—草业科学]