ACTA AGRICULTURAE BOREALI-SINICA ›› 2010, Vol. 25 ›› Issue (5): 193-197. doi: 10.7668/hbnxb.2010.05.039

Special Issue: Wheat Soil fertilizer

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Effects of Nitrogen Ratio of Base Fertilizer and Topdressing on Uptake,Utilization of Nitrogen and Yield in Winter Wheat

ZHANG Xu, WANG Yilun, HAN Yanlai, TAN Jinfang   

  1. Resource and Environment College of Henan Agricultural University, Zhengzhou 450002, China
  • Received:2010-07-11 Published:2010-10-28

Abstract: The objectives of this study were to determine the reasonable nitrogen applying regimes for profitable yields and high efficient nitrogen utilization in high yield winter wheat production. Field experiments were conducted to investigate the effects of nitrogen application at different stages and rates on grain yield,nitrogen accumulate and nitrogen efficiency of winter wheat in north Henan super high yield field with the total pure N 240 kg /ha. The results showed that compared with the total nitrogen fertilizer basal dressing,grain yield of winter wheat,the amount of nitrogen accumulation,nitrogen recovery rate,nitrogen agronomic efficiency,nitrogen absorption efficiency,nitrogen harvest index of nitrogen fertilizer were increased with mult-application of nitrogen fertilizer at the same amount of nitrogen, but soil nitrogen dependence rate was decreased. Percentage of nitrogen accumulation in winter wheat plants until greening stage to total nitrogen accumulation in whole growth stage was 9. 4%-11. 2% . After greening stage winter wheat demanded more nitrogen,nitrogen absorbed by plant from greening to filling stage and after filling stage accounted for 63. 3%-66. 6% and 23. 5%-25. 9% ,respectively. Under the condition of this experiment,as far as grain yield,nitrogen fertilizer use efficiency and the amount of nitrogen accumulation in plant were concerned,1 /3 nitrogen fertilizer basal dressing,1 /3 nitrogen fertilizer top dressing at greening stage and 1 /3 nitrogen fertilizer top dressing at jointing stage was the best nitrogen application model.

Key words: Winter wheat, Yield, Nitrogen recovery rate, Nitrogen absorption efficiency, Nitrogen harvest index, Soil nitrogen dependence rate

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Cite this article

ZHANG Xu, WANG Yilun, HAN Yanlai, TAN Jinfang. Effects of Nitrogen Ratio of Base Fertilizer and Topdressing on Uptake,Utilization of Nitrogen and Yield in Winter Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(5): 193-197. doi: 10.7668/hbnxb.2010.05.039.

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