Effect of Nitrogen Fertilizer on Waxy Corn Yield and Soil Nitrogen Dynamics

doi:10.7668/hbnxb.2008.S2.065

Abstract

Abstract: This paper studied the effect of different nitrogen rates on waxy corn yield,N use efficiency and soil nitrogen dynamics. The results show: the appropriate N application rate increased crop biomass and grain yield while over application of N fertilizer did not increase crop biomass or yield, The N fertilizer effect equation of waxy corn was Y=13 189+ 28??50X - 0??11X ².Nitrogen rates significantly affected the accumulation and distribution of nitrate N in the soilprofile but had little effect on ammonium N.The accumulation of nitrate N of the 270 kg/ ha was higher than the other Nrates which increased the rudiment of nitrate N, at the same time, the rainfall or irrigation would increase the risk of nitrate N leaching to the subsoil and had a potential threaten on the environment.

Key words: Nitrogen fetilizer rate, Waxy corn, Nitrate N, Ammonia N

CLC Number:

S143.1

WU Wen-qiang, HE Jian-de, ZHAO Yong-zhi, ZHAO Guo-long, JIN Man. Effect of Nitrogen Fertilizer on Waxy Corn Yield and Soil Nitrogen Dynamics[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(S2): 283-285. doi: 10.7668/hbnxb.2008.S2.065.

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http://www.hbnxb.net/EN/Y2008/V23/IS2/283

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