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中国农学通报

中国农学通报 ›› 2005, Vol. 21 ›› Issue (11): 161-161.

所属专题： 玉米

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种植密度和施氮水平对东青1号青贮玉米生物产量及农艺性状的影响

于天江,张 林,谷思玉,李 陶,鄂文弟,王振华   

  • 出版日期:2005-11-05 发布日期:2005-11-05

Effects of Different Planting Density and Nitrogen Rates on Biological Yield and Agricultural Traits of Silage Maize Dongqing 1

Yu Tianjiang, Zhang Lin, Gu Siyu, Li Tao, E Wendi, Wang Zhenhua   

  • Online:2005-11-05 Published:2005-11-05

摘要： 试验以专用青贮玉米新品种东青1号为试验材料，研究了4种密度和6个施氮水平对青贮玉米生物产量及主要农艺性状的影响。结果表明，密度和施氮水平对生物产量的影响不是简单的线性递增关系，达到一定量后生物产量不在增加，相反有所降低。在种植密度为4.67万株/hm2和施氮水平18.4g/m2时该品种的生物产量最高；主要农艺性状随密度和施氮量的变化情况不同，株高、空秆率、穗位高随着密度的增加有增加的趋势；单株绿叶数、穗粗、穗行数、行粒数、穗长、茎粗随着密度的增加有下降的趋势；株高、茎粗、单株绿叶数、穗粗、穗位高、穗长随着施

Abstract: In this paper the effects of 4 planting densities and 6 nitrogen rates on biological yield and agricultural traits of silage maize were studied by using Dongqing1 as materials. The results showed that the effects of density and nitrogen rate on biological