ACTA AGRICULTURAE BOREALI-SINICA ›› 2009, Vol. 24 ›› Issue (2): 185-189. doi: 10.7668/hbnxb.2009.02.038

Special Issue: Wheat

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Differences of Nitrogen Efficiency in Henan Wheat Varieties

GUO Zhan-ling, SHEN A-lin, KOU Chang-lin, MA Zheng-hua, WANG Shou-gang   

  1. Institute of Plant Nutrition Agricultural Resources and Environmental Science, Henan Academy of Agriculture Sciences, Zhengzhou 450002, China
  • Received:2008-12-21 Published:2009-04-28

Abstract: A pot experiment with eight wheat varieties from Henan province was conducted to investigate the genotype differences in N efficiency at two rates of N supply. The results showed that the grain yields of all varieties increased significantly with the increase of nitrogen application.The increasing rates were related to the variety sensitivity to N.The difference of N efficiency was obvious among the 8 wheat varieties.The N efficience of Zhengmai 004,Taikong 6,Zhengmai 9023,Zhoumai 16 and Yumai 50 were very high at low N and high N.Path analysis indicated that N efficiency was determined mainly by N uptake efficiency at low N condition,but by both N uptake efficiency and N utilization efficiency at high N condition.

Key words: Wheat, Varieties, Nitrogen uptake efficiency, Nitrogen utilization efficiency, Nitrogen efficiency

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Cite this article

GUO Zhan-ling, SHEN A-lin, KOU Chang-lin, MA Zheng-hua, WANG Shou-gang. Differences of Nitrogen Efficiency in Henan Wheat Varieties[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2009, 24(2): 185-189. doi: 10.7668/hbnxb.2009.02.038.

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