Characteristics of Nutrient Accumulation and Efficiency in Maize under Different Agronomic Managements | ||
| Journal of Agricultural Science and Technology | ||
| Article 9, Volume 17, Issue 7, 2015, Pages 1755-1767 PDF (215.11 K) | ||
| Authors | ||
| W. Ma1; J. Q. Ping2 | ||
| 1Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, People’s Republic of China. | ||
| 2Department of Agronomy, Purdue University, 915 W State Street, West Lafayette, IN 47907, USA. | ||
| Abstract | ||
| A four-year field experiment was conducted to understand the characters of nutrient accumulation and distribution in maize under different yield levels, so as to provide scientific guidance for effective utilization of mineral fertilizers, and eventually for high yield of spring maize. The grain yield, nutrient (nitrogen, phosphorous, potassium) accumulation and uptake efficiency were evaluated under different agronomic managements and nitrogen application treatments. The data showed that the two-year average grain yield under high Yield Management (HY) was significantly increased by 35.3% as compared with Traditional Farming management (FP). Interestingly, the increased range of grain yield may be associated with harvest ear numbers, indicating that high planting density could lead to high maize production. Moreover, the total amounts of nitrogen, phosphorous and potassium in maize significantly increased and the ratio of accumulation after flowering was also improved under HY management. Our results suggested that the high grain yield and nutrient use efficiency would ultimately be achieved through integrating and optimizing high yield cultivation techniques, which not only improve biomass and harvest index, but also promote the growth and nutrient accumulation of maize. | ||
| Keywords | ||
| Cultivation pattern; N level; Nutrition; Spring maize | ||
| References | ||
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