播期和播量对祁连山南麓人工草地牧草生长特征的影响  

EFFECTS OF SOWING DATE AND SOWING AMOUNT ON GRASS GROWTH CHARACTERISTICS OF ARTIFICIAL GRASSLAND AT THE SOUTHERN FOOT OF QILIAN MOUNTAINS

作　　者：土旦加 杨占芳 蒋宏宇 史浩然 梁德飞 王浩善 段迎珠 贾科 TU Dan-jia(Qinghai Province Grassland Improvement Experimental Station,Gonghe Qinghai 811800,China)

机构地区：[1]青海省草原改良试验站,青海共和811800 [2]青海大学省部共建三江源生态与高原农牧业国家重点实验室,青海西宁810016 [3]青海大学生态环境工程学院,青海西宁810016

出　　处：《青海草业》2024年第1期2-7,共6页Qinghai Prataculture

基　　金：祁连山南麓退化高寒草原恢复治理技术研发与示范项目;高海拔冻土区退化草地生态恢复关键技术转化与示范项目。

摘　　要：为了解播期和播量对高寒人工草地播种牧草生长特征的影响,以祁连山南麓单独播种的大颖仲彬草(Roegneria grandiglumis)、冰草(Agropyron cristatum)和寒生羊茅(Festuca kryloviana)为研究对象,分析三种植物生长特征对播期和播量的响应,以期为区域高寒人工草地有效建植提供支撑。结果表明:三种牧草均能在祁连山南麓生长;6月8日播种的植物高度和地上生物量均显著高于5月12日和5月25日播种的;不同牧草对播期和播量的响应不一致,表现在5月12日播种的冰草以小播量播种、大颖仲彬草以中播量播种的高度最高;寒生羊茅在6月8日播种生长效果较好。在祁连山南麓高寒人工草地建植中,需根据牧草物种差异针对性选择适宜的播期和播量。In order to clarify the effects of sowing time and sowing amount on the growth characteristics of sown grass in alpine artificial grassland,Roegneria grandiglumis,Agropyron cristatum and Festuca kryloviana seeded in the southern foot of Qilian Mountains were selected as the research objects.Throughanalyze the suitable sowing date and sowing amount of the seeded plants were analyzed in this region,to provide support for the effective construction of alpine artificial grassland.The results showed that all three plants could grow in the artificial grassland in the southern foothills of Qilian Mountains.The plant height and aboveground biomass of at June 8th sowing date were significantly higher than the other sowing dates.The response of different plants to sowing time and sowing amount was inconsistent,which showed that the A.cristatum height was highest in small sowing amount,while the R.grandiglumis height was highest in medium sowing amount at May 12th,respectively.In addition,F.kryloviana grows better than the others at June 8th.In the establishment of alpine artificial grassland at the southern foot of Qilian Mountains,it is necessary to select the appropriate sowing date and sowing amount according to the differences of forage species.

关 键 词：播期 播量 生长特征 祁连山南麓 

分 类 号：S812[农业科学—草业科学]