PreprintArticleVersion 1Preserved in Portico This version is not peer-reviewed
Effects of Nitrogen Application at Different Levels by a Sprinkler Fertigation System on Crop Growth and Nitrogen-Use Efficiency of Winter Wheat in the North China Plain
Version 1
: Received: 1 April 2024 / Approved: 1 April 2024 / Online: 1 April 2024 (12:25:33 CEST)
How to cite:
Wang, K.; Liu, H.; Gao, Z. Effects of Nitrogen Application at Different Levels by a Sprinkler Fertigation System on Crop Growth and Nitrogen-Use Efficiency of Winter Wheat in the North China Plain. Preprints2024, 2024040082. https://doi.org/10.20944/preprints202404.0082.v1
Wang, K.; Liu, H.; Gao, Z. Effects of Nitrogen Application at Different Levels by a Sprinkler Fertigation System on Crop Growth and Nitrogen-Use Efficiency of Winter Wheat in the North China Plain. Preprints 2024, 2024040082. https://doi.org/10.20944/preprints202404.0082.v1
Wang, K.; Liu, H.; Gao, Z. Effects of Nitrogen Application at Different Levels by a Sprinkler Fertigation System on Crop Growth and Nitrogen-Use Efficiency of Winter Wheat in the North China Plain. Preprints2024, 2024040082. https://doi.org/10.20944/preprints202404.0082.v1
APA Style
Wang, K., Liu, H., & Gao, Z. (2024). Effects of Nitrogen Application at Different Levels by a Sprinkler Fertigation System on Crop Growth and Nitrogen-Use Efficiency of Winter Wheat in the North China Plain. Preprints. https://doi.org/10.20944/preprints202404.0082.v1
Chicago/Turabian Style
Wang, K., Haijun Liu and Zhuangzhuang Gao. 2024 "Effects of Nitrogen Application at Different Levels by a Sprinkler Fertigation System on Crop Growth and Nitrogen-Use Efficiency of Winter Wheat in the North China Plain" Preprints. https://doi.org/10.20944/preprints202404.0082.v1
Abstract
Nitrogen (N) is an essential macro nutrient for crop growth; therefore, N deficit can greatly limit crop growth and production. In the North China Plain (NCP), winter wheat is one of the main food crops, and its yield has increased from approximately 4000 kg ha-1 to 6000 kg ha-1 in the last two decades. Determining the proper N application rates at different growth stages and in all seasons is very important for the sustainable and high production of wheat in the NCP. A field experiment with five N application rates (250, 200, 150, 100, and 40 kgN·ha-1, designated as N250, N200, N150, N100, and N40, respectively) was conducted during the 2017-2018 and 2018-2019 winter wheat seasons to investigate the effects of the N application rate on water- and fertiliz-er-utilization efficiency, and on the crop growth and yield of winter wheat under sprinkler fer-tigation conditions. The results showed that, in the N application range of 40-200 kg ha-1, crop yield and water- and fertilizer-use efficiencies increased as the N application rate increased; however, further increases in the N application rate did not have additional benefits. The N up-take after regreening of winter wheat linearly increased with crop growth. Considering the wheat yield and N-use efficiency, the optimal N application range was 200 kg ha-1, and the best top-dressing strategy was equal amounts of N applied at the regreening, jointing, and grain-filling stages. The results of this study will be useful for optimizing field N management to achieve high wheat yield production in the NCP and in regions with similar climatic and soil environment conditions.
Keywords
winter wheat; nitrogen application rates; nitrogen adsorption curve; water and fertilizer use efficiency
Subject
Biology and Life Sciences, Agricultural Science and Agronomy
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
