Peng, Zhengping and Liu, Yanan and Li, Yingchun and Abawi, Yahya and Wang, Yanqun and Men, Minxin and An-Vo, Duc-Anh 
ORCID: https://orcid.org/0000-0001-7528-7139
(2017)
Responses of nitrogen utilization and apparent nitrogen loss to different control measures in the wheat and maize rotation sytsem.
Frontiers in Plant Science, 8:160.
pp. 1-9.
|
Text (Published Version)
fpls-08-00160 - Copy.pdf Available under License Creative Commons Attribution 4.0. Download (494kB) | Preview |
Abstract
Nitrogen (N) is an essential macronutrient for plant growth and excessive application rates can decrease crop yield and increase N loss into the environment. Field experiments were carried out to understand the effects of N fertilizers on N utilization, crop yield and net income in wheat and maize rotation system of the North China Plain (NCP). Compared to farmers’ N rate (FN), the yield of wheat and maize in reduction N rate by 21–24% based on FN (RN) was improved by 451 kg ha-1, N uptakes improved by 17 kg ha-1 and net income increased by 1671 CNY ha-1, while apparent N loss was reduced by 156 kg ha-1. The controlled-release fertilizer with a 20% reduction of RN (CRF80%), a 20% reduction of RN together with dicyandiamide (RN80%+DCD) and a 20% reduction of RN added with nano-carbon (RN80%+NC) all resulted in an improvement in crop yield and decreased the apparent N losses compared to RN. Contrasted with RN80%+NC, the total crop yield in RN80%+DCD improved by 1185 kg ha-1, N uptake enhanced by 9 kg ha-1 and net income increased by 3929 CNY ha-1, while apparent N loss was similar. Therefore, a 37–39% overall decrease in N rate compared to farmers plus the nitrification inhibitor, DCD, was effective N control measure that increased crop yields, enhanced N efficiencies, and improved economic benefits, while mitigating apparent N loss. There is considerable scope for improved N use effieincy in the intensive wheat -maize rotation of the NCP.
|
Statistics for this ePrint Item |
| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Faculty/School / Institute/Centre: | Historic - Institute for Agriculture and the Environment |
| Faculty/School / Institute/Centre: | Historic - Institute for Agriculture and the Environment |
| Date Deposited: | 23 Mar 2017 05:38 |
| Last Modified: | 03 Jun 2021 05:21 |
| Uncontrolled Keywords: | apparent nitrogen loss, maize, net income, nitrogen efficiency, nitrogen fertilizer measures, wheat |
| Fields of Research (2008): | 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070306 Crop and Pasture Nutrition |
| Fields of Research (2020): | 30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3004 Crop and pasture production > 300407 Crop and pasture nutrition |
| Socio-Economic Objectives (2008): | D Environment > 96 Environment > 9699 Other Environment > 969999 Environment not elsewhere classified |
| Identification Number or DOI: | https://doi.org/10.3389/fpls.2017.00160 |
| URI: | http://eprints.usq.edu.au/id/eprint/30576 |
Actions (login required)
 |
Archive Repository Staff Only |