ACTA AGRICULTURAE BOREALI-SINICA ›› 1999, Vol. 14 ›› Issue (S1): 131-134. doi: 10.7668/hbnxb.1999.S1.028

Special Issue: Wheat Soil fertilizer

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A Study on Nitrogen Fertilizer Application Recommendation to Winter Wheat Using Index of NO-3~- Concentration in Stem of Wheat

Zhao Tongke, Cao Yunzhe, Zhang Guoyin, Li Guangmin   

  1. Hebei Academy of Agricultural and Forestry Sciences,Shijiazhuang 050051
  • Published:1999-12-31

Abstract: It had been demonstrated that NO3- N concentration in plant at jointing stage could be used as nitrogen fertilizer application recommendation indexes on winter wheat in arid and semi-arid area. The present experiment studied NO3-N concentration in wheat stem in different type soils with different nitrogen fertilzer application and its relationship to wheat grain produc-tion. Results showed that NO3- N in base of stem at jointing stage had significant correlative re-lationship with the grain yield. NO3- N concentration in base of wheat stem at jointing stage in-creased with nitrogen fertilizer rate,and the wheat grain yield also increased with the increase of NO3- N concentration in base of wheat stem at jointing stage. The top nitrogen application in highest yields were 207,194,100 kg /ha respectively. The counterpart of highest yields were 7639?6762?4241 kg/ha. The study also showed that the highest grain yields under three of soil fertility levels NO3- N concentration in base of stem at jointing stage were 1600,1145 and 671 mg/kg.

Key words: Winter wheat, Plant, Nitrogen recommendation, Fertilizer application, Index

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Cite this article

Zhao Tongke, Cao Yunzhe, Zhang Guoyin, Li Guangmin. A Study on Nitrogen Fertilizer Application Recommendation to Winter Wheat Using Index of NO-3~- Concentration in Stem of Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1999, 14(S1): 131-134. doi: 10.7668/hbnxb.1999.S1.028.

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