Effects of Fertilizer Supply Ways on the Nitrogen use Efficiency and Yields Performance in Maize

Shutang Liu,Hongsheng Zhang,Xiyun Song,Xu Jianting,Wen Jiang

doi:10.19026/ajfst.11.2737

Abstract

This research aimed to find out the best fertilizer type and fertilization methods in local summer maize production. We analyzed the effects of three fertilizer supply ways on photosynthetic characteristics, nitrogen use efficiency and grain yield in summer maize. The results showed that the LAI, SPAD and nitrogen use efficiency of CRF (Controlled release fertilizer was applied as the basal application without top-dressing) were higher than CK (Compound fertilizer was applied as the basal application with urea as top-dressing). The grain yield of CRF was lower than CK and CF (Compound fertilizer was applied as the basal application without top-dressing). Treatment CK needed extra labor cost of topdressing and its process was complicated than CF and CRF. Treatment CF and CRF could simplified the cultivation of the summer maize. Compared with CF, the grain yield of CRF was more stable and the safety factor is higher. Therefore, the controlled release fertilizer had high safety factor and more stable grain yield. And it could improve photosynthetic characteristics and nitrogen use efficiency and effectively simplified the cultivation of the summer maize. The controlled release fertilizer was the best fertilizer type and fertilization methods in local summer maize production.

Highlights

Summer maize is one of the most important grain crops in China and nitrogen is a most important factor affecting the grain yield of maize
Effects of different treatments on Leaf Area Index (LAI) after silking: At medium fertilizer supply in 2013, the LAI at each stage of treatment Controlled Release Fertilizer (CRF) was higher than CK and CF (Table 2)
The results showed that different fertilizer supply ways had great influence on nitrogen use efficiency, grain yield and photosynthetic characteristics

Summary

Introduction

Summer maize is one of the most important grain crops in China and nitrogen is a most important factor affecting the grain yield of maize. It has been found that controlled release fertilizer could significantly improve the grain yield of summer maize (Zhao et al, 2013; Wang et al, 2010; Zhao et al, 2008; Wang, 2013) and it could improve photosynthetic characteristics of summer maize than compound fertilizer (Zhao et al, 2013) It could improve the nitrogen use efficiency and decrease the risk of nitrate pollution (Wang et al, 2010; Wang, 2013; Zhang et al, 2012). The aim of this research was to further investigate the effect of controlled release fertilizer on photosynthetic characteristics and nitrogen accumulation, especially on grain yield in summer maize in local summer maize production

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Conclusion