Effects of nitrogen fertilizer optimization on yield and nutrient absorption and utilization of Fengtou ginger

doi:10.14088/j.cnki.issn0439-8114.2023.12.010

Abstract

Abstract: A 2-year field experiment was carried out to study the effects of nitrogen application rate and optimized fertilization on the yield and nutrient absorption and utilization of Fengtou ginger in Laifeng County. The results showed that with the increase of nitrogen application rate, the yield, dry matter quality, and nitrogen accumulation of Fengtou ginger showed a trend of first increasing and then decreasing, and the optimal nitrogen application rate was 450~495 kg/hm². The effects of different nitrogen application rates on nitrogen utilization efficiency and nitrogen fertilizer agronomic utilization efficiency of Fengtou ginger were not significant, but increasing nitrogen application rates reduced nitrogen fertilizer partial productivity. Compared with conventional fertilization（CF）, specialized fertilizer（SF） and slow-release fertilizer（SRF） treatments increased the yield of Fengtou ginger by 25.23% and 13.96%, respectively. Specialized fertilizer could achieve higher dry matter quality and nitrogen accumulation. Compared to conventional fertilization, the nitrogen utilization efficiency, nitrogen agronomic utilization efficiency and nitrogen partial productivity of the specialized fertilizer treatment increased by 19.33%, 62.58% and 25.23%, respectively, while those of the slow-release fertilizer treatment increased by 13.33%, 34.66% and 13.96%, respectively.

Key words: nitrogen application rate, Fengtou ginger, special fertilization, slow-release fertilization, fertilizer utilization rate

CLC Number:

XU Da-bing, ZHOU Jian-xiong, HU Hong-tao, ZHU Feng-juan, YUAN Jia-fu, ZHAO Shu-jun. Effects of nitrogen fertilizer optimization on yield and nutrient absorption and utilization of Fengtou ginger[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(12): 46-50.

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