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Acta Prataculturae Sinica ›› 2012, Vol. 21 ›› Issue (1): 34-42.

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Effect of different nitrogen supply methods on yield and photosynthesis of maize under the alternative fallow high stubble about narrow row and wide row

LIU Chao-wei1,2, ZHANG En-he1, XIE Rui-zhi2, LIU Wu-ren3, LI Shao-kun2   

  1. 1.College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China;
    2.Institute of Crop Science, Chinese Academy of Agricultural Sciences, Key Laboratory of Crop Physiology and Production Ministry of Agriculture, Beijing 100081, China;
    3..Jinlin Academy of Agricultural Sciences, Changchun 130124, China
  • Online:2012-02-20 Published:2012-02-20

Abstract: A field experiment was designed to investigate the effects of five N supply methods (no fertilizer, one fertilizer application, basic+jointing fertilizer, basic+jointing+earing fertilizer, slow release fertilizer) on grain yield, photosynthesis, leaf area index (LAI) and photosynthetic active radiation (PAR) of maize (Zea mays) under the alternative fallow high stubble about narrow rows and wide rows. In terms of tillage and fertilizer interaction, the yield of basic+jointing+earing fertilizer of narrow row and wide row treatment (11 709.3 kg/ha) was higher than that of other treatments by 7.05%-30.29% except for one fertilizer and basic+jointing fertilizer of conventional treatment. At flowering to filling stage, the best treatments were basic+jointing+earing fertilize and slow release fertilizer of narrow row and wide row treatment (29.65-34.16 μmol/m2·s). Generally, stomatal conductance, transpiration rate of several fertilizer applications were higher than a single fertilizer application in a narrow row and wide row treatment, but intercellular CO2 concentration was the opposite. The mean transmittance of narrow row and wide row treatment was higher than that of conventional treatment by 3.60%-10.64% and the basic+jointing+earing fertilizer was the lowest in narrow row and wide row treatments. The LAI of narrow row and wide row treatment was lower than conventional treatment except for the basic+jointing+earing fertilize and slow release fertilizer. The results of this study suggest that basic+jointing+earing fertilizer of the narrow row and wide row may be the best management strategy because of its relatively higher grain yield, and improved photosynthesis and transmittance.

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