Compound Fertilizers with Different Nitrogen Forms on the Growth and Nitrogen Use Efficiency of Maize Seedlings

doi:10.3321/j.issn:1000-7091.2005.06.018

Abstract

Abstract: A pot experiment was carried out to investigate the effect of compound fertilizers with different nitrogen forms on maize seedling growth in different soils.The results showed as follows:Maize grown in the treatment of compound fertilizer containing urea alone had significantly lower germination rate than the maize receiving mixed CO(NH₂-N/NH₄⁺-N or mixed NO₃^--N/NH₄⁺-N in compound fertilizers in Udic Isohumisols.However,there was no significant affect of nitrogen forms on maize germination rate in Udic Cambosols.Nitrogen forms in compound fertilizer affected biomass accumulation of maize too,and the highest dry weight of shoot and root was found in the plants supplied with compound fertilizer containing 100% urea nitrogen in Udic Isohumisols,and mixed nitrate and ammonium in Udic Cambosols.It was shown that enhancement of NO₃^--N/NH₄⁺-N in compound fertilizer could increase nitrogen accumulation and nitrogen use efficiency of maize in both of the soils.

Key words: Compound fertilizers, N forms, Maize seedlings

CLC Number:

S143

GAO Zhi, XU Yang-chun, SHEN Qi-rong, SHEN Bing, WANG Jin-ming. Compound Fertilizers with Different Nitrogen Forms on the Growth and Nitrogen Use Efficiency of Maize Seedlings[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2005, 20(6): 68-72. doi: 10.3321/j.issn:1000-7091.2005.06.018.

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