Acta Agrestia Sinica

›› 2006, Vol. 14 ›› Issue (1): 48-51,56.DOI: 10.11733/j.issn.1007-0435.2006.01.011

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Effect of Nitrogen Fertilizer Application on Elymus nutans Seed Quality and Yield in Qinghai-Tibet Plateau

QIAO An-hai1,2, HAN Jian-guo1, GONG Ai-qi2, LI Wei3, WANG Yun-wen1, QIN Ge-ju1, GUO Shu-dong2, WU Jing-ming2, ZHAO Dian-zhi3   

  1. 1. Institute of Grassland Science, China Agriculture University, Beijing 100094, China;
    2. Qinghai Provincial Grassland Post, Xining, Qinghai Province 810008, China;
    3. Qinghai Sanjiaocheng Stud Farm, Gangcha, Qinghai Province 812300, China
  • Received:2005-11-08 Revised:2006-01-16 Online:2006-02-15 Published:2006-02-15

氮肥对垂穗披碱草种子产量和质量的影响

乔安海1,2, 韩建国1, 巩爱岐2, 李伟3, 王贇文1, 秦歌菊1, 郭树栋2, 吴精明2, 赵殿智3   

  1. 1. 中国农业大学草地研究所, 北京, 100094;
    2. 青海省草原总站, 西宁, 810008;
    3. 青海省三角城种羊场, 刚察, 812300
  • 通讯作者: 韩建国,E-mail:grasslab@public3.bta.net.cn
  • 作者简介:乔安海(1965- ),男,陕西岐山县人,高级畜牧师,主要从事牧草种子生产研究;
  • 基金资助:
    农业部948项目(202099)资助

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Abstract: Field experiments were conducted in Sanjiaocheng Stud Farm in two years(2001-2002),to test the effects of nitrogen fertilizer application on Elymus nutans seed yield and seed quality.Results show that the yield reached the highest rate of 1856 kg/hm2 with 120 kg/hm2 N application(Autumn 60+Spring 60).The fertilizer significantly raises the seed yield components,including fertile tillers/m2,florets per spikelet,fertile florets per spikelet,and thousand-seed weight,though it does not influence spikelets per fertile tiller.The fertilizer also raises the early-mature seed germination rate,seedling length and weight,as well as the acid phosphoesterase activity.

Key words: Fertilizer application, Elymus nutans, Seed yield, Seed quality

摘要： 2001-2002年研究氮肥对垂穗披碱草(Elymus nutans)种子产量和质量的影响。结果表明:施氮量以120 kg/hm2(秋60+春60)的效果最好,种子产量达1856 kg/hm2;施氮肥可提高生殖枝数、小花数/小穗、可育小花数/小穗和种子千粒重,但对小穗数/生殖枝影响不显著;施氮肥能提高早期成熟种子的发芽率、芽长、芽重及酸性磷酸脂酶的活性。

关键词: 施肥, 垂穗披碱草, 种子产量, 种子质量

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