播期对青藏高原燕麦生长和饲草品质的影响  

Effects of Sowing Dates on the Growth and Forage Quality of Oat on the Qinghai-Tibet Plateau

作　　者：宋词 黄小涛 石国玺 周华坤[2] 王芳萍 姚步青[2] SONG Ci;HUANG Xiao-tao;SHI Guo-xi;ZHOU Hua-kun;WANG Fang-ping;YAO Bu-qing(College of Eco-Environmental Engineering, Qinghai University, Xining, Qinghai Province 810016, China;Key Laboratory of Cold Regions Restoration Ecology, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai Province 810008, China;Key Laboratory of Utilization of Agriculture Solid Waste Resources, College of Bioengineering and Biotechnology, Tianshui Normal University, Tianshui, Gansu Province 741000, China;University of Chinese Academy of Sciences, Beijing 100039, China)

机构地区：[1]青海大学生态与环境工程学院,青海西宁810016 [2]中国科学院西北高原生物研究所,青海省寒区恢复学重点实验室,青海西宁810008 [3]天水师范学院,甘肃省农业固体废弃物资源化利用重点实验室,甘肃天水741300 [4]中国科学院大学,北京100039

出　　处：《草地学报》2021年第S01期121-127,共7页Acta Agrestia Sinica

基　　金：青海省自然科学基金面上项目(2020-ZJ-925);青海省“高端创新创业人才”项目;甘肃省杰出青年基金项目(20 JR5RA500);国家自然科学基金项目(32160269,31860146);中国科学院“西部之光”青年学者项目共同资助。

摘　　要：为了研究播期延后对高原饲草生长和品质的影响,本研究选取‘加燕2号’燕麦(Avena sativa L.)品种为试验材料,设置3个播种时间:6月上旬(传统播期)、6月中旬(播期延后)和6月下旬(播期延后),并测定土壤理化性质、牧草生物量和营养成分等指标。结果表明:播期调整对牧草生物量和土壤理化性质无显著影响,但传统技术播种燕麦粗蛋白含量降低,具有养分转移重吸收现象,而播期延后燕麦可以保持粗蛋白含量不降低,同时粗纤维含量减小。因此,播期延后可以在保证燕麦产量的前提下,增加牧草营养含量,并提高适口性,本试验最佳播期为6月中旬。To study the impact of the delay of sowing time on the growth and quality of forage on the plateau,this research choose‘Jiayan 2’as oat(Avena sativa L.)planting varieties,and set up three sowing times:early June(traditional sowing),the middle of June(deferred sowing)and late June(deferred sowing),and determinate some indicators of soil physical and chemical properties,grass biomass and nutrients.The results showed that the adjustment of sowing date had no significant effect on the biomass of herbage,the physical or chemical properties of soil,but the crude protein content of oat sown with traditional sowing technology was decreased,which had the phenomenon of nutrient transfer and resorption.The crude protein content of oat sown with delayed sowing date was not changed,while the crude fiber content of oat was decreased.Therefore,delaying the sowing date can increase the nutrient content and palatability of herbage on the premise of ensuring the yield of oat.The best sowing date in this experiment is mid-June.

关 键 词：燕麦 播期调整 养分重吸收 粗蛋白 粗纤维 

分 类 号：S512.6[农业科学—作物学]