不同播种因素对扁穗冰草生产性能的影响  

Effects of different sowing factors on growth and development of Agropyron cristatum

作　　者：祁百元 杨明岳 窦声云 仁钦端治 董世魁[2] QI Bai-yuan;YANG Ming-yue;DOU Sheng-yun;Renqin Duanzhi;DONG Shi-kui(Tebuga Grassland Improvement Experimental Station of Qinghai Provinc;College of Environment,Beijing Normal Universit;Beijing 100875,China)

机构地区：[1]青海省铁卜加草原改良试验站,青海铁卜加810001 [2]北京师范大学环境学院,北京100875

出　　处：《草原与草坪》2018年第3期62-66,共5页Grassland and Turf

基　　金：国家重点研发计划重点专项课题(2016YFC0501906);环境模拟与污染控制国家重点联合实验室项目(17L03ESPC);农业科技成果转化和推广计划项目(2013-N-513)资助

摘　　要：在青海省铁卜加高寒地区,在不施肥、不灌溉和人工清除杂草的条件下,通过田间试验研究不同行距(20,30,40cm)和播种量(67.5,101.1和135kg/hm2)对野生扁穗冰草生长、种子产量和干草产量的影响,以确定最佳的扁穗冰草田建植条件。结果表明:不同播种因素处理对鲜重、株高、茎叶比及生长速度的影响不明显。但对草产量和种子产量的影响较大。其中,行距20cm,播种量67.5kg/hm2处理下的干草产量和种子产量均最大,分别为6 065.35和1 610.33kg/hm2。In Tebuga region of Qinghai Province,field trials were conducted to determine the effects of different row spacing,seeding rate and other factors on the growth,seed yield and hay yield of Agropyron cristatum under no-fertilization,no-irrigation,and manual removal of weeds in order to determine the optimal conditions for oat establishment.The results showed that the effects of different sowing factors on fresh weight,plant height,stem-leaf ratio and growth rate were not significant.But their impacts on grass production and seed yield were significant.The hay yield and seed yield under the row spacing of 20 cm and seeding rate of 67.5 kg/ha were the highest（6 065.35 kg/ha and 1 610.33 kg/ha）

关 键 词：高寒草地 扁穗冰草 行距 播种量 产草量 种子产量 

分 类 号：S532[农业科学—作物学]