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2012 (Vol. 4, Issue: 6)
Article Information:

Effects of Postponing N Application on Wheat Grain Yield, Protein Quality and Fertilizer-N use Efficiency in Low-Yield Field in Jianghan Plain

Xiao-yan Wang, Chun-bao Gao and Zhang-yong Liu
Corresponding Author:  Zhang-yong Liu 

Key words:  Grain yield, low-yield field, postponing N application, protein quality, wheat, ,
Vol. 4 , (6): 357-361
Submitted Accepted Published
August 31, 2012 October 03, 2012 December 20, 2012
Abstract:

In 2008 to 2010, the effects of postponing N application on wheat grain yield and process quality were studied in low-yield field in Jianghan Plain in wheat. The results were as follows. When the Topdressing fertilizer N (TN) was postponed from tilling stage to jointing stage, the biomass and the SPAD value in flag leaf reduced, respectively. And grain yield, protein content in grain and stability time of paste, reduced as a result. When the topdressing fertilizer N was postponed from jointing stage to booting stage, the regularity of above index changed conversely. For the treatments with the same topdressing fertilizer date (jointing stage), the appropriate ratio of Basal dressing fertilizer (BN)to topdressing fertilizer was 3:7, with high biomass, high SPAD value in flag leaf, high grain yield and high process quality as a result. The results also indicated that the right stage for more N in organ vegetative to be transferred to grain was jointing stage and the right ratio of BN to TN was 3:7, which was the very basis for high nitrogen fertilizer utilization. Based on the above results, it was suggested that to gain high grain yield and high process quality the appropriate date for topdressing fertilizer N in low-yield field in Jianghan Plain was jointing stage and the ratio of BN to TN was 3:7.
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  Cite this Reference:
Xiao-yan Wang, Chun-bao Gao and Zhang-yong Liu, 2012. Effects of Postponing N Application on Wheat Grain Yield, Protein Quality and Fertilizer-N use Efficiency in Low-Yield Field in Jianghan Plain.  Advance Journal of Food Science and Technology, 4(6): 357-361.
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