Irrigation Scheduling Optimization of Drip-irrigated without Plastic Film Cotton in South Xinjiang Based on AquaCrop Model

被引：0
|
作者：
Wang X. [1 ,2 ]
Jiang F. [1 ,2 ]
Wang H. [1 ,2 ]
Cao H. [1 ,2 ]
Yang Y. [1 ,2 ]
Gao Y. [3 ]
机构：
[1] College of Water Conservancy and Architecture Engineering, Tarim University, Alar
[2] Key Laboratory of Modern Agricultural Engineering, Tarim University, Alar
[3] Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2021年 / 52卷 / 04期
关键词：
AquaCrop model; Cotton; Drip-irrigation without plastic film; Irrigation scheduling; Yield;
D O I：
10.6041/j.issn.1000-1298.2021.04.031
中图分类号：
学科分类号：
摘要：
To investigate the applicability of the AquaCrop model to drip-irrigated cotton without plastic film in South Xinjiang, and develop the optimal irrigation scheduling, the AquaCrop model was calibrated and validated by using the dataset collected in 2018 and 2019 seasons, then the model was used to simulate canopy cover (CC), plant biomass, and cotton yield under two different irrigation scenarios. The results showed that the root mean square error (RMSE), the fit index (d), the standard root mean square error (NRMSE) and the determination coefficient (R2) between the simulated and measured values of CC were 6.03%, 0.12, 13.08% and 0.97, and the corresponding values for plant biomass and cotton yield were 810 kg/hm2, 0.93, 6.41% and 0.80, and 751 kg/hm2, 0.84, 14.02% and 0.87, respectively, indicating that the AquaCrop model could be used as a feasible tool to predict cotton growth and yield response to irrigation under drip irrigation without plastic film in this region. The scenario simulation was carried out by using the AquaCrop model with the meteorological data from 1960 to 2019. The scenario simulation results indicated that under the condition of the same irrigation frequency, the cotton yield was increased first and then decreased with the increase of the irrigation quota, and the maximum yield of 5 398 kg/hm2 was obtained with the total irrigation amount of 7 200 m3/hm2, and the water use efficiency (WUE) was 0.75 kg/m3. While under the condition of the same irrigation quota, the cotton yield was increased with the increase of irrigation frequency, and the maximum yield of 5 315 kg/hm2 was achieved with the irrigation frequency of 5 d and the total irrigation amount of 5 400 m3/hm2, and WUE was 0.98 kg/m3. It could be concluded that the high yield and WUE of drip-irrigated cotton without plastic film could be ensured by the irrigation scheduling with the irrigation frequency of 5 d and the total irrigation amount of 5 400 m3/hm2, which could be used as a reference irrigation scheduling for application of drip-irrigated cotton without plastic film in South Xinjiang. © 2021, Chinese Society of Agricultural Machinery. All right reserved.
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页码：293 / 301and335
相关论文
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