Matrix-based Nitrogen Fertilizers with Different Matrix-material Doses: Effects on Ammonia Volatilization and Nitrogen Use Efficiency in Maize Field

doi:10.11924/j.issn.1000-6850.casb20190600354

Abstract

Abstract:

The paper aims to explore the effects of matrix-based nitrogen fertilizers with different matrix-material doses on ammonia volatilization and nitrogen use efficiency in the maize field. We set up 8 treatments including the control test, common nitrogen fertilizer, and 6 matrix-based nitrogen fertilizers (with 1%-6% matrix-materials, at a 1% interval) to measure the ammonia volatilization, soil inorganic nitrogen, maize yield and yield components, plant nitrogen uptake, nitrogen physiological efficiency, nitrogen recovery efficiency, and nitrogen agronomical efficiency and so on in the field. The results showed that: the total ammonia volatilization in matrix-based nitrogen fertilizer treatments in the field was 9.5%-45.9% lower than that in regular nitrogen fertilizer treatment; the ammonia volatilization in the field decreased with the increase of matrix-material dose; compared with regular nitrogen fertilizer treatment, matrix-based nitrogen fertilizer treatments with 2%-6% matrix-materials significantly increased soil inorganic nitrogen at silking stage by 7.1%-17.8%, grain yield by 5.2%-19.4%, nitrogen recovery efficiency by 21.1%-55.0%, and nitrogen agronomical efficiency by 22.5%-38.1%. Overall, the application of matrix-based nitrogen fertilizers with ≥2% matrix-materials could reduce ammonia volatilization in the maize field, increase maize grain yield, and improve the nitrogen use efficiency.

Key words: Zea mays L., nitrogen use efficiency, soil inorganic nitrogen, ammonia volatilization, nitrogen uptake, grain yield

CLC Number:

S143.1+5

Yang Yang, Ni Xiaoyu, Liu Binmei, Tao Liangzhi, Yu Lixiang, Yang Ye, Feng Mengxi, Zhong Wenjin, Wu Yuejin. Matrix-based Nitrogen Fertilizers with Different Matrix-material Doses: Effects on Ammonia Volatilization and Nitrogen Use Efficiency in Maize Field[J]. Chinese Agricultural Science Bulletin, 2020, 36(24): 14-22.

Figures/Tables 5

References 32

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参数	生长季	施肥处理	交互效应
田间氨挥发	^**	^**	^**
土壤矿质氮	^**	^**	ns
籽粒产量	^**	^**	^**
穗粒数	^**	^**	^**
千粒重	^*	^**	^**
植株氮吸收量	^**	^**	^**
氮肥生理效率	^**	^**	^**
氮肥表观效率	^**	^**	ns
氮肥农学效率	^**	^**	ns

参数	生长季	施肥处理	交互效应
田间氨挥发	^**	^**	^**
土壤矿质氮	^**	^**	ns
籽粒产量	^**	^**	^**
穗粒数	^**	^**	^**
千粒重	^*	^**	^**
植株氮吸收量	^**	^**	^**
氮肥生理效率	^**	^**	^**
氮肥表观效率	^**	^**	ns
氮肥农学效率	^**	^**	ns