| dc.contributor |
School of Plant and Environmental Sciences |
|
| dc.creator |
Ji, Jingchun |
|
| dc.creator |
Liu, Jianli |
|
| dc.creator |
Chen, Jingjing |
|
| dc.creator |
Niu, Yujie |
|
| dc.creator |
Xuan, Kefan |
|
| dc.creator |
Jiang, Yifei |
|
| dc.creator |
Jia, Renhao |
|
| dc.creator |
Wang, Can |
|
| dc.creator |
Li, Xiaopeng |
|
| dc.date |
2021-06-24T14:53:47Z |
|
| dc.date |
2021-06-24T14:53:47Z |
|
| dc.date |
2021-06-16 |
|
| dc.date |
2021-06-24T14:11:23Z |
|
| dc.date.accessioned |
2023-03-01T18:52:16Z |
|
| dc.date.available |
2023-03-01T18:52:16Z |
|
| dc.identifier |
Ji, J.; Liu, J.; Chen, J.; Niu, Y.; Xuan, K.; Jiang, Y.; Jia, R.; Wang, C.; Li, X. Optimization of Topdressing for Winter Wheat by Accurate Growth Monitoring and Improved Production Estimation. Remote Sens. 2021, 13, 2349. |
|
| dc.identifier |
http://hdl.handle.net/10919/103986 |
|
| dc.identifier |
https://doi.org/10.3390/rs13122349 |
|
| dc.identifier.uri |
http://localhost:8080/xmlui/handle/CUHPOERS/281604 |
|
| dc.description |
Topdressing accounts for approximately 40% of the total nitrogen (N) application of winter wheat on the Huang-Huai-Hai Plain in China. However, N use efficiency of topdressing is low due to the inadaptable topdressing method used by local farmers. To improve the N use efficiency of winter wheat, an optimization method for topdressing (T<sub>HP</sub>) is proposed that uses unmanned aerial vehicle (UAV)-based remote sensing to accurately acquire the growth status and an improved model for growth potential estimation and optimization of N fertilizer amount for topdressing (NFT). The method was validated and compared with three other methods by a field experiment: the conventional local farmer’s method (T<sub>LF</sub>), a nitrogen fertilization optimization algorithm (NFOA) proposed by Raun and Lukina (T<sub>RL</sub>) and a simplification introduced by Li and Zhang (T<sub>LZ</sub>). It shows that when insufficient basal fertilizer was provided, the proposed method provided as much NFT as the T<sub>LF</sub> method, i.e., 25.05% or 11.88% more than the T<sub>RL</sub> and T<sub>LZ</sub> methods and increased the yields by 4.62% or 2.27%, respectively; and when sufficient basal fertilizer was provided, the T<sub>HP</sub> method followed the T<sub>RL</sub> and T<sub>LZ</sub> methods to reduce NFT but maintained as much yield as the T<sub>LF</sub> method with a decrease of NFT by 4.20%. The results prove that T<sub>HP</sub> could enhance crop production under insufficient N preceding conditions by prescribing more fertilizer and increase nitrogen use efficiency (NUE) by lowering the fertilizer amount when enough basal fertilizer is provided. |
|
| dc.description |
Published version |
|
| dc.format |
application/pdf |
|
| dc.format |
application/pdf |
|
| dc.language |
en |
|
| dc.publisher |
MDPI |
|
| dc.rights |
Creative Commons Attribution 4.0 International |
|
| dc.rights |
http://creativecommons.org/licenses/by/4.0/ |
|
| dc.subject |
topdressing optimization |
|
| dc.subject |
UAV-based remote sensing |
|
| dc.subject |
growth potential |
|
| dc.subject |
winter wheat |
|
| dc.subject |
Huang-Huai-Hai Plain |
|
| dc.title |
Optimization of Topdressing for Winter Wheat by Accurate Growth Monitoring and Improved Production Estimation |
|
| dc.title |
Remote Sensing |
|
| dc.type |
Article - Refereed |
|
| dc.type |
Text |
|
| dc.type |
StillImage |
|