ACTA AGRICULTURAE BOREALI-SINICA ›› 2013, Vol. 28 ›› Issue (5): 224-230. doi: 10.7668/hbnxb.2013.05.038

Special Issue: Corn

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Effects of Planting Patterns and Densities on Carbon and Nitrogen Metabolism and Nitrogen Use Efficiency in Summer Maize

ZHANG Qian1, ZHANG Hong-sheng1, JIANG Wen1, SONG Xi-yun1, LI Rui-guo2   

  1. 1 College of Agronomy and Plant Protection of Qingdao Agricultural University, Shandong Key Laboratory of Dryland Farming Technology, Qingdao 266109, China;
    2 Rushan Agricultural Bureau, Weihai 264500, China
  • Received:2013-07-20 Published:2013-10-28

Abstract: Effects of different shrink line-wild line planting patterns,i.e.three-row strip,four-row strip,five-row strip on the carbon and nitrogen metabolism of summer maize were analyzed with two planting densities ( 67 500, 82 500 plants per ha ),and convention equal line planting pattern was as control. Compared with control,the N ac-cumulation of above ground in maturity stage increased by 16.2%,16.9%,20.0%under three-row strip,four-row strip and five-row strip cropping pattern,respectively,and the yield also significantly increased. Positive correlation was observed between N accumulation,leaf N translocation amount and grain yield,which provided the evidence that higher grain yield and recovery of N fertilizer could be obtained by increasing N accumulation and translocation. Negative correlation was found between the C/N ratio in leaf at maturity stage and yield,and the lowest C/N ratio in leaf at maturity stage was in the treatments of three-row strip under both low density and high density, while CK showed the highest C/N ratio in leaf.

Key words: Summer maize, Planting patterns, Nitrogen accumulation, C /N ratio, Nitrogen translocation

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Cite this article

ZHANG Qian, ZHANG Hong-sheng, JIANG Wen, SONG Xi-yun, LI Rui-guo. Effects of Planting Patterns and Densities on Carbon and Nitrogen Metabolism and Nitrogen Use Efficiency in Summer Maize[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(5): 224-230. doi: 10.7668/hbnxb.2013.05.038.

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