Evaluation and optimization of border irrigation in different irrigation seasons based on temporal variation of infiltration and roughness

Xu, Jianchu; Cai, Huanjie; Saddique, Qaisar; Wang, Xiaoyun; Li, Liang; Ma, Chenguang; Lu, Yajun

doi:10.1016/j.agwat.2019.01.003

Cited by 45 publications

(40 citation statements)

References 25 publications

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“…Three days after irrigation at the flowering stage, the relative soil water content in the 0‐to‐20‐cm soil layer in W2 was significantly higher than that in W1, but there was no significant difference between W1 and W2 in the relative soil water content of the 0‐to‐40‐cm and the 0‐to‐200‐cm soil layers. The results showed that, under the condition of the same border specifications, field slope of the test plot, flow rate, and cutoff control index, more irrigation water remained in the shallow soil layers in W2, which is closely related to the water content of the surface soil before irrigation (Maheshwari & Jayawardane, 1992; Xu et al., 2019).…”

Section: Resultsmentioning

confidence: 99%

“…Different letters above the vertical bars indicate that the differences between means are significant at the .5 probability level (LSD test) cm and the 0-to-200-cm soil layers. The results showed that, under the condition of the same border specifications, field slope of the test plot, flow rate, and cutoff control index, more irrigation water remained in the shallow soil layers in W2, which is closely related to the water content of the surface soil before irrigation (Maheshwari & Jayawardane, 1992;Xu et al, 2019).…”

Section: F I G U R Ementioning

confidence: 95%

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Response of nitrogen redistribution to irrigation at jointing in winter wheat

Shang

Wang

et al. 2020

Agronomy Journal

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To explore the effect of irrigation at the jointing stage on nitrogen (N) redistribution after flowering and productivity effects of water and N in winter wheat (Triticum aestivum L.), a 2‐yr field experiment was conducted between 2015 and 2017. Three irrigation regimes were designed as follows: rain‐fed (W0), irrigation at jointing and 7 d after flowering (W1), and irrigation at 7 d after flowering (W2). Compared with W2, W1 increased spike number, kernels per spike, and N and dry matter (DM) accumulation at flowering; delayed the senescence of flag leaves after flowering; increased the flag leaf photosynthetic rate, redistribution of N and DM from vegetative organs to grains in the middle and late grain filling stages, and grain yield; and decreased N and DM redistribution and grain weight during early grain development. This may be the reason why the N uptake efficiency and N productive efficiency were higher, whereas the productivities of water and N had no significant difference, and even water productivity was lower under W1 than W2. Therefore, on the basis of suitable water supply from jointing to flowering, achieving a high N and DM accumulation at flowering and high kernels per spike, if the grain development can be accelerated earlier and the redistribution of N and DM can be promoted, it is expected to further improve the productivities of water and N.

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Section: Resultsmentioning

confidence: 99%

Section: F I G U R Ementioning

confidence: 95%

Response of nitrogen redistribution to irrigation at jointing in winter wheat

Shang

Wang

et al. 2020

Agronomy Journal

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show abstract

“…The sustainability level of agricultural water resources not only depends on the total amount of water resources and the quality of water resources of a certain city, but on the utilization efficiency of water resources. Therefore, other cities could learn from the experience of cities like Wuhan and Jingmen to combine the characteristics of agricultural land, field irrigation adaptability and technical requirements in the 17 cities, and actively adopt water-saving surface irrigation technologies such as plastic film mulching technology [95], small border irrigation technology [96], and furrow irrigation technology [97] to improve the effective irrigation rate on cultivated land. III.…”

Section: Imentioning

confidence: 99%

Are China’s Water Resources for Agriculture Sustainable? Evidence from Hubei Province

Jin

Huang

2021

Sustainability

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We assessed the sustainability of agricultural water resources in Hubei Province, a typical agricultural province in central China, for a decade (2008–2018). Since traditional evaluation models often consider only the distance between the evaluation point and the positive or negative ideal solution, we introduce gray correlation analysis and construct a new sustainability evaluation model. Our research results show that only one city had excellent sustainable development capacity of agricultural water resources, and the evaluation value of eight cities fluctuated by around 0.5 (the median of the evaluation result), while the sustainable development capacity of agricultural water resources in other cities was relatively poor. Our findings not only reflect the differences in the natural conditions of water resources among various cities in Hubei, but also the impact of the cities’ policies to ensure efficient agricultural water use for sustainable development. The indicators and methods in this research are not difficult to obtain in most countries and regions of the world. Therefore, the indicator system we have established by this research could be used to study the sustainability of agricultural water resources in other countries, regions, or cities.

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“…Salahou et al (2018) conducted experiments on closedend border irrigation and proposed optimal distancebased cut-off times for different inflow rates to achieve high irrigation performance. Xu et al (2019) conducted experiments on border irrigation to analyse variations in soil infiltration parameters and Manning's roughness in different crop growth periods; they proposed an optimized combination of discharge per unit width and cut-off time for their study area. The use of inflow discharge and cut-off time as control variables for improving border irrigation performance is relatively simple and enables easy control of the cut-off time.…”

Section: Introductionmentioning

confidence: 99%

Simplified method for estimating the optimal cut‐off time of closed‐end border irrigation^*

Nie

2020

Irrigation and Drainage

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Closed-end border irrigation has been widely used in China; however, such irrigation is usually associated with poor performance. Therefore, the performance of closed-end border irrigation must be improved. The objectives of this study were to develop and verify a simplified method for estimating the optimal cut-off time (T cop ) for closed-end border irrigation. The simulated results revealed that the relationship between T cop and the time when water advanced to 75% of the length of the border (T 0.75L ) can be characterized by using a power function. The comprehensive irrigation performance indicator Y (which is the geometric mean of the application efficiency and Christiansen's uniformity) obtained using the proposed method was consistent with that obtained using existing methods. The mean absolute value of the relative error and the standard error of Y between the proposed method and existing methods was 3.35 and 0.69%, respectively. This result indicates that the proposed method has high reliability. Moreover, in the proposed method, only T 0.75L is required to determine T cop for closed-end border irrigation. Therefore, the proposed method has high practicality and can be used to improve the performance of closed-end border irrigation. K E Y W O R D Sirrigation en circuit fermé, temps limite, débit par unité de largeur, performances d'irrigation Abstract Résumé L'irrigation en circuit fermé a été largement utilisée en Chine; cependant, une telle irrigation est généralement associée à de mauvaises performances. Par conséquent, la performance de l'irrigation en circuit fermé doit être améliorée.Les objectifs de cette étude étaient de développer et de vérifier une méthode simplifiée pour estimer le temps de coupure optimal (T cop ) pour l'irrigation en circuit fermé. Les résultats simulés ont révélé que la relation entre T cop et le moment où l'eau a avancé jusqu'à 75% de la longueur du circuit (T 0.75L ) peut être caractérisée à l'aide d'une fonction de puissance. L'indicateur complet de performance d'irrigation Y (qui est la moyenne géométrique de l'efficacité de l'application et de l'uniformité de Christiansen) obtenu à l'aide de la méthode * Méthode simplifiée d'estimation de l'heure de coupure optimale de l'irrigation en circuit fermé.

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Evaluation and optimization of border irrigation in different irrigation seasons based on temporal variation of infiltration and roughness

Cited by 45 publications

References 25 publications

Response of nitrogen redistribution to irrigation at jointing in winter wheat

Response of nitrogen redistribution to irrigation at jointing in winter wheat

Are China’s Water Resources for Agriculture Sustainable? Evidence from Hubei Province

Simplified method for estimating the optimal cut‐off time of closed‐end border irrigation^*

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Evaluation and optimization of border irrigation in different irrigation seasons based on temporal variation of infiltration and roughness

Cited by 45 publications

References 25 publications

Response of nitrogen redistribution to irrigation at jointing in winter wheat

Response of nitrogen redistribution to irrigation at jointing in winter wheat

Are China’s Water Resources for Agriculture Sustainable? Evidence from Hubei Province

Simplified method for estimating the optimal cut‐off time of closed‐end border irrigation*

Contact Info

Product

Resources

About

Simplified method for estimating the optimal cut‐off time of closed‐end border irrigation^*