Limited irrigation and planting densities for enhanced water productivity and economic returns under the ridge-furrow system in semi-arid regions of China

Jia, Qianmin; Sun, Lefeng; Wang, Jinjin; Li, Juan; Ali, Shahzad; Liu, Tiening; Zhang, Peng; Lian, Yanhao; Ding, Ruixia; Ren, Xiaolong; Jia, Zhikuan

doi:10.1016/j.fcr.2018.03.005

Cited by 41 publications

(20 citation statements)

References 21 publications

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“…ET showed various patterns under different planting densities and no significant difference was found over three growth seasons. In the study of Jia et al (2018c), the ET before silking increased as planting density increased, but it decreased with increasing planting density after silking. Also, there were no significant differences among different plant densities in rainfed maize because limited water supply constrained the ET .…”

Section: Effects Of Mulching Type and Planting Density On Et And Wuementioning

confidence: 89%

Ridge-furrow plastic mulching with a suitable planting density enhances rainwater productivity, grain yield and economic benefit of rainfed maize

et al. 2020

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Soil surface mulching and planting density regulation are widely used for effective utilization of limited rainwater resources and improvement of crop productivity in dryland farming. However, the combined effects of mulching type and planting density on maize growth and yield have been seldom studied, especially in different hydrological years. A field experiment was conducted to evaluate the effects of mulching type and planting density on the soil temperature, growth, grain yield (GY), water use efficiency (WUE) and economic benefit of rainfed maize in the drylands of northern China during 2015-2017. Precipitation fluctuated over the three years. There were four mulching types (NM, flat cultivation with non-mulching; SM, flat cultivation with straw mulching; RP, plastic-mulched ridge plus bare furrow; RPFS, plastic-mulched ridge plus straw-mulched furrow) and three planting densities (LD, low planting density, 45.0×10 3 plants/hm 2 ; MD, medium planting density, 67.5×10 3 plants/hm 2 ; HD, high planting density, 90.0×10 3 plants/hm 2 ). Results showed that soil temperature was higher with RP and lower with SM compared with NM, but no significant difference was found between RPFS and NM. More soil water was retained by soil mulching at the early growth stage, but it significantly varied at the middle and late growth stages. Maize growth was significantly improved by soil mulching. With increasing planting density, stem diameter, net photosynthetic rate and chlorophyll content tended to decline, whereas a single-peak trend in biomass yield was observed. Mulching type and planting density did not have significant effect on evapotranspiration (ET), but GY and WUE were significantly affected. There were significant interacting effects of mulching type and planting density on biomass yield, GY, ET and WUE. Compared with NM, RPFS, RP and SM increased GY by 57.5%, 50.8% and 18.9%, and increased WUE by 66.6%, 54.3% and 18.1%, respectively. At MD, GY increased by 41.4% and 25.2%, and WUE increased by 38.6% and 22.4% compared with those of at LD and HD. The highest maize GY (7023.2 kg/hm 2 ) was observed under MD+RPFS, but the value (6699.1 kg/hm 2 ) was insignificant under MD+RP. Similar trends were observed for WUE under MD+RP and MD+RPFS, but no significant difference was observed between these two combinations. In terms of economic benefit, net income under MD+RP was the highest with a 9.8% increase compared with that of under MD+RPFS. Therefore, we concluded that RP cultivation pattern with a suitable planting density (67.5×10 3 plants/hm 2 ) is promising for rainwater resources utilization and maize production in the drylands of northern China.

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Section: Effects Of Mulching Type and Planting Density On Et And Wuementioning

confidence: 89%

Ridge-furrow plastic mulching with a suitable planting density enhances rainwater productivity, grain yield and economic benefit of rainfed maize

et al. 2020

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“…In addition, the differences in the contribution rates of N and P fertilizers to IWP were mainly due to: 1) there were differences in the mean value of soil nitrogen and phosphorus content; and 2) the average amount of N on the scale of PLID was much higher than that of the MHRB, while the application of P was just the opposite. A study has shown that suitable PD can effectively improve the water productivity of maize [62,63] . As can be seen from Figure 3, the PD has the third-highest contribution to IWP at different sampling distance, and the contribution rate was 6.8% and 6% respectively.…”

Section: Contribution Rate Of Driving Factors Of Iwpmentioning

confidence: 99%

Quantitative analysis of irrigation water productivity in the middle reaches of Heihe River Basin, Northwest China

Cao

et al. 2019

International Journal of Agricultural and Biological Engineering

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With the growing shortage of surface water resources, it is of great significance for improving the irrigation water productivity (IWP) to ensure the water and food security. The contribution of the driving factors of the IWP and the rational regulation of the input factors of agricultural production is required. In this paper, 118 and 80 sampling points were selected in Pingchuan and Liaoquan irrigation districts (PLID, the spacing of sampling point is approximately 1 km) and the middle reaches of the Heihe River basin (MHRB, the spacing of sampling point is approximately 10 km), respectively. Soil characteristics and management measures near the sampling points were obtained. Results showed that the average value of the IWP in MHRB was 1.67 kg/m 3 , with a moderate heterogeneity in the space. The main driving factors of IWP were irrigation, fertilization and planting density. On the PLID, the contribution rates of soil factors and management measures to IWP were 20.6% and 35.2%, respectively, and the contribution of soil factors to IWP increased to 43.8% in the MHRB, while the contribution rate of management measures decreased to 24.8%. It shows that in a small irrigation districts, from the perspective of farmers, the improvement of IWP should be mainly controlled by management measures, while in the large area of watershed scale, the spatial differences in soil factors also need to be considered by the government management departments, when they want to increase IWP through regulating management measures.

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“…However, in recent years, changes in the climate patterns have led to frequent droughts in many areas (Tietjen et al, 2017). Below 500 mm, rainfall is insufficient to meet crop water requirements with or without tied-ridging (Wiyo et al, 2000) and this water deficit can seriously affect crop production, leading to remarkable reduction in grain yield (Jia et al, 2018). Therefore, it is better to combine water and soil conservation techniques with irrigation in order to provide water for crops at least during the critical period (Jia et al, 2018).…”

Section: Insecuritymentioning

confidence: 99%

“…Below 500 mm, rainfall is insufficient to meet crop water requirements with or without tied-ridging (Wiyo et al, 2000) and this water deficit can seriously affect crop production, leading to remarkable reduction in grain yield (Jia et al, 2018). Therefore, it is better to combine water and soil conservation techniques with irrigation in order to provide water for crops at least during the critical period (Jia et al, 2018). The results of Jia et al (2018) showed that combining ridge-furrow and irrigation at the silking stage provide moisture for crop growth and improve maize grain yield, economic benefit, and water use in the semi-arid regions.…”

Section: Insecuritymentioning

confidence: 99%

“…Therefore, it is better to combine water and soil conservation techniques with irrigation in order to provide water for crops at least during the critical period (Jia et al, 2018). The results of Jia et al (2018) showed that combining ridge-furrow and irrigation at the silking stage provide moisture for crop growth and improve maize grain yield, economic benefit, and water use in the semi-arid regions. The use of irrigation system might improve water security as there is a relationship between water security and food security (Sinyolo et al, 2014;Besada and Werner, 2015).…”

Section: Insecuritymentioning

confidence: 99%

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Water and soil conservation techniques and food security in the northern region of Burkina Faso

Sanou¹,

Ayantunde²,

Nianogo³

2018

Afr. J. Agric. Res.

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Food insecurity is a major challenge facing the rapidly growing population in the sub-Saharan Africa and it is a common feature in the northern region of Burkina Faso. The focus of this study was to investigate the prevalence of food insecurity in the northern region of Burkina Faso after many years of implementation of water and soil conservation techniques. A survey was carried out in six villages in the Northern Region of Burkina Faso involving 300 households to assess water and soil conservation techniques, and to examine the prevalence of food insecurity. The study was conducted between June and July 2015. Data collected was analyzed using logistic regression to identify factors influencing food insecurity in the study areas. The results also showed a high level of food insecurity affecting a large proportion of the population even during the post-harvest period when food was supposed to be available. Results showed that water and soil conservation techniques and household head education level were important factors in determining household food insecurity status. Despite the application of these techniques, food insecurity is still persistent, which raised questions about the efficiency of current agricultural production systems. In addressing food insecurity in the study area, it is necessary to reinforce the practice of combining stone bunds and inter-row ridges techniques along with proper use of fertilizer and manure. Given the persistent problem of water scarcity in Burkina Faso, and the relationship between water and food security, there is need to increase investment in water management infrastructures.

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Limited irrigation and planting densities for enhanced water productivity and economic returns under the ridge-furrow system in semi-arid regions of China

Cited by 41 publications

References 21 publications

Ridge-furrow plastic mulching with a suitable planting density enhances rainwater productivity, grain yield and economic benefit of rainfed maize

Ridge-furrow plastic mulching with a suitable planting density enhances rainwater productivity, grain yield and economic benefit of rainfed maize

Quantitative analysis of irrigation water productivity in the middle reaches of Heihe River Basin, Northwest China

Water and soil conservation techniques and food security in the northern region of Burkina Faso

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