Improved water use efficiency and fruit quality of greenhouse crops under regulated deficit irrigation in northwest China

Yang, Hui; Du, Taisheng; Qiu, Rangjian; Chen, Jinliang; Feng, Wang; Li, Yang; Wang, Chenxia; Gao, Lihong; Kang, Shaozhong

doi:10.1016/j.agwat.2016.05.029

Cited by 122 publications

(58 citation statements)

References 40 publications

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“…Reducing evaporation and increasing relative air humidity are likely the two most important factors in efficient water use; (d) a certain percentage of evaporated water from the soil surface is recycled within the cultivation unit because cultivation is in a relatively closed system; and (e) sophisticated agronomic practices are used for crop management in the cultivation unit ( Fig. 3f), such as pruning branches to increase light penetration (Du et al 2016), optimizing ventilation to balance CO 2 for plant photosynthesis and disease incidence (Yang et al 2017), and aerating the rooting zone post-irrigation for a few days to minimize soil evaporation (Li et al 2016); all of which help to increase crop yield and enhance WUE.…”

Section: Improved Water Use Efficiencymentioning

confidence: 99%

Gobi agriculture: an innovative farming system that increases energy and water use efficiencies. A review

Xie

Chen

et al. 2018

Agron. Sustain. Dev.

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In populated regions/countries with fast economic development, such as Africa, China, and India, arable land is rapidly shrinking due to urban construction and other industrial uses for the land. This creates unprecedented challenges to produce enough food to satisfy the increased food demands. Can the millions of desert-like, non-arable hectares be developed for food production? Can the abundantly available solar energy be used for crop production in controlled environments, such as solar-based greenhouses? Here, we review an innovative cultivation system, namely "Gobi agriculture." We find that the innovative Gobi agriculture system has six unique characteristics: (i) it uses desert-like land resources with solar energy as the only energy source to produce fresh fruit and vegetables year-round, unlike conventional greenhouse production where the energy need is satisfied via burning fossil fuels or electrical consumption; (ii) clusters of individual cultivation units are made using locally available materials such as clay soil for the north walls of the facilities; (iii) land productivity (fresh produce per unit land per year) is 10-27 times higher and crop water use efficiency 20-35 times greater than traditional open-field, irrigated cultivation systems; (iv) crop nutrients are provided mainly via locallymade organic substrates, which reduce synthetic inorganic fertilizer use in crop production; (v) products have a lower environmental footprint than open-field cultivation due to solar energy as the only energy source and high crop yields per unit of input; and (vi) it creates rural employment, which improves the stability of rural communities. While this system has been described as a "Gobi-land miracle" for socioeconomic development, many challenges need to be addressed, such as water constraints, product safety, and ecological implications. We suggest that relevant policies are developed to ensure that the system boosts food production and enhances rural socioeconomics while protecting the fragile ecological environment.

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Section: Improved Water Use Efficiencymentioning

confidence: 99%

Gobi agriculture: an innovative farming system that increases energy and water use efficiencies. A review

Xie

Chen

et al. 2018

Agron. Sustain. Dev.

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“…Regulated deficit irrigation could alleviate regional water stress by improving agricultural water use efficiency. Meanwhile, it can also achieve the goal of increasing crop yield and land use efficiency by reducing the loss of soil organic carbon (Yang et al, ).…”

Section: Introductionmentioning

confidence: 99%

Impacts of future climate and agricultural land‐use changes on regional agricultural water use in a large irrigation district of northwest China

Sun

Zhou

et al. 2019

Land Degrad Dev

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Agricultural sectors are facing various environmental threats, such as land degradation and water resource depletion. Agricultural water use and cropping patterns are closely linked to each other, with both related to the regional climate. This study evaluated the impacts of future climate and agricultural land-use changes on agricultural water consumption in the Hetao Irrigation District (HID), China. The results show that owing to an increase in temperature and a decrease in precipitation, the future climate in the research area will become warmer and dryer, which will increase the water demand of crops. Future climate in the HID will lead to a 10.5% increase in total irrigation water demand under a scenario of high greenhouse gas emissions and a 6.9% increase under a scenario of low greenhouse gas emissions. Results of the grey prediction modeling indicate that the amount of water allocated to the agricultural sector will decrease, which will make it difficult to meet crop irrigation demands. The results of the gray model also show that the cropping pattern in the HID will vary over time, and the proportion of the area of cash crops will increase by 5.3% during the next decade. Regional agricultural water use can be reduced by adjusting the cropping pattern under irrigation water limitations. Meanwhile, the saved water can be used for soil desalination in cultivated land in the HID.Consequently, adjusting the cropping pattern is a nature-based solution by which to address climate change and guarantee the sustainable use of regional water and land resources.

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“…The parameters of the irrigation regime, water productivity and quantity of production have been established (3)(4)(5)(6). Data obtained from an irrigated irrigation regime as a result of reduced irrigation rates and between irrigation periods provide useful indications of the possibility of improving the nutritional quality of tomatoes by reducing the irrigation rate.…”

Section: Introductionmentioning

confidence: 99%

Dependencies Between Morphological Indicators and Early Ripeness of Greenhouse Tomatoes at Different Levels of Fertilization and Dilferent Water Supply

Stoyanova¹,

Kuneva²,

Georgiev³

et al. 2019

TJS

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The purpose of this study is to determine the impact of controlled permanent water deficiency and three levels of fertilization on earliness and total yield of tomatoes, greenhouse production using different mathematical approaches. In order to evaluate the morphological manifestations, the early harvest and the total yield under the influence of different irrigation and nutritional regimes, a tomatoes variety "Vitelio" was used. The irrigation is done with a drip irrigation system. Against the background of the same fertilizing rates in the variants with different irrigation norms there is a decrease in the early stage with an increase of the irrigation norms. A high correlation between plant height and total yield, with correlation coefficient (r = 0.899) and between sheet count and total yield r = 0.824 was found. There was a negative correlation between the first and third harvests and the total yield, respectively with correlation coefficients r = -0.724 and r = -0.704. The nature of the linear relationship between plant height and total yield is determined by the coefficient R2 = 0.8. Based on a two-factor analysis, it was found that irrigation regime had a dominant influence on the two parameters considered: height and yield, which was statistically proven with a very high degree of confidence (p ≤ 0.001).

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Improved water use efficiency and fruit quality of greenhouse crops under regulated deficit irrigation in northwest China

Cited by 122 publications

References 40 publications

Gobi agriculture: an innovative farming system that increases energy and water use efficiencies. A review

Gobi agriculture: an innovative farming system that increases energy and water use efficiencies. A review

Impacts of future climate and agricultural land‐use changes on regional agricultural water use in a large irrigation district of northwest China

Dependencies Between Morphological Indicators and Early Ripeness of Greenhouse Tomatoes at Different Levels of Fertilization and Dilferent Water Supply

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