Winter wheat yield potentials and yield gaps in the North China Plain

Lu, Chunxia; Lan, Fan

doi:10.1016/j.fcr.2012.09.015

Cited by 150 publications

(97 citation statements)

References 18 publications

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“…As a major crop of North China Plain, the area of winter wheat (Triticum aestivum L.) is 14,560,000 ha and accounts for 53% of wheat production in China (Lu and Fan, 2013). However, the amount of water resources is important for wheat production (Sun et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Precision Planting Patterns Effect on Growth, Photosynthetic Characteristics and Yield of Winter Wheat under Deficit Irrigation

Han¹,

Wang²,

Zhou³

2016

IJAB

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Different cultivation patterns affect the grain yields of winter wheat by regulating growth and development. In this study, the growth of wheat was observed for two years (2008-2009 and 2009-2010). We established three cultivation patterns: 25 cm uniform row planting pattern; "20 cm + 40 cm" wide-narrow row planting pattern (wide-narrow row spacing is 40 cm and 20 cm respectively); and "20 cm + 40 cm" furrow planting pattern (double lines in the furrow with 20 cm spacing, 40 cm between furrows, and ridge height of 15 cm). Three irrigation treatments viz. 90, 135 and 180 mm were established. Results showed that furrow planting pattern improved the ratio of variable over maximum fluorescence (Fv/Fm).With increasing irrigation amount, Fv/Fm increased, the amplification declined, and the net photosynthetic rate in flag leaves increased. However, such effect was not obvious beyond the irrigation range stipulated. Therefore, we recommend the furrow planting pattern, which resulted in stable yield and 135 mm deficit irrigation as optimum considering the water shortage in the area.

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Section: Introductionmentioning

confidence: 99%

Precision Planting Patterns Effect on Growth, Photosynthetic Characteristics and Yield of Winter Wheat under Deficit Irrigation

Han¹,

Wang²,

Zhou³

2016

IJAB

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“…Arid and semi-arid regions in Northwest China make up 30% of the national land area, but have less than 20% of total national available water resources because rainfall is low and evapotranspiration is high; thus, water shortages in this region are of particular concern [1,9]. This issue is even more critical because much of the irrigated cultivated land in China is also distributed in these arid and semi-arid areas; natural rainfall cannot meet the water requirements of crops in this region and so supplementary irrigation is essential to increase yields and to guarantee food security in these areas [15,37,38]. Agricultural irrigation water nationally accounts for 60% of total water use, but more than 80% of total consumption in the arid and semi-arid areas of Northwest China [2,25].…”

Section: Introductionmentioning

confidence: 99%

“…Agricultural irrigation water nationally accounts for 60% of total water use, but more than 80% of total consumption in the arid and semi-arid areas of Northwest China [2,25]. Thus, accurate IWR c calculations are crucial to the regional social-economic and ecological sustainable development of these areas where water is scarce [37,39].…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Patterns of Crop Irrigation Water Requirements in the Heihe River Basin, China

Liu

Song

Deng

2017

Water

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Abstract:Agricultural expansion, population growth, rapid urbanization, and climate change have all significantly impacted global water supply and demand and have led to a number of negative consequences including ecological degradation and decreases in biodiversity, especially in arid and semi-arid areas. The agricultural sector consumes the most water globally; crop irrigation alone uses up more than 80% of available agricultural water. Thus, to maintain sustainable development of the global economy and ecosystems, it is crucial to effectively manage crop irrigation water. We focus on the arid and semi-arid Heihe River Basin (HRB), China, as a case study in this paper, extracting spatiotemporal information on the distribution of crop planting using multi-temporal Thematic Mapper and Enhanced Thematic Mapper Plus (TM/ETM+) remote sensing (RS) images. We estimate the spatiotemporal crop irrigation water requirements (IWR c ) using the Food and Agriculture Organization of the United Nations (FAO) Penman-Monteith method and reveal variations in IWR c . We also analyze the impact of changes in crop planting structure on IWR c and discuss strategies for the rational allocation of irrigation water as well as policies to alleviate imbalance between water supply and demand. The results of this study show that effective rainfall (ER) decreases upstream-to-downstream within the HRB, while crop evapotranspiration under standard conditions (ET c ) increases, leading to increasing spatial variation in IWR c from zero up to 150 mm and between 300 and 450 mm. Data show that between 2007 and 2012, annual mean ER decreased from 139.49 to 106.29 mm, while annual mean ET c increased from 483.87 to 500.38 mm, and annual mean IWR c increased from 339.95 to 370.11 mm. Data show that monthly mean IWR c initially increased before decreasing in concert with crop growth. The largest values for this index were recorded during the month of June; results show that IWR c for May and June decreased by 8.14 and 11.67 mm, respectively, while values for July increased by 5.75 mm between 2007 and 2012. These variations have helped to ease the temporal imbalance between water supply and demand. Mean IWR c values for oilseed rape, corn, barley, and other crops all increased over the study period, from 208. 43, 349.35, 229.26, and 352.85 mm, respectively, in 2007, to 241.81, 393.10, 251.17, and 378.86 mm, respectively, in 2012. At the same time, the mean IWR c of wheat decreased from 281.53 mm in 2007 to 266.69 mm in 2012. Mainly because of changes in planting structure, the total IWR c for the HRB in 2012 reached 2692.58 × 10 6 m 3 , an increase of 332.16 × 10 6 m 3 (14.07%) compared to 2007. Data show that 23.11% (76.77 × 10 6 m 3 ) of this increase is due to crop transfers, while the remaining 76.89% (255.39 × 10 6 m 3 ) is the result of the rapid expansion of cultivated land. Thus, to maintain both the sustainable development and ecological security of the HRB, it is crucial to efficiently manage and utilize agricultural water in light of spat...

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“…Most future increases in agricultural production are therefore likely to be generated by improving the output per unit of land, that is, from higher land productivity (Schierhorn et al, 2014). The range of future increases in land productivity is substantial in many transition and developing countries where the differences between the potential yield under optimum management and the yields that are actually achieved by farmers, that is also to say the yield gaps are large (Hall et al, 2013;Affholder et al, 2013;van Ittersum and Cassman, 2013;Lu and Fan, 2013). Decreases in the yield gaps will typically require higher and more efficient input use (fertilizers, pesticides, and water) and improvements in crop management (Evans and Fischer, 1999).…”

Section: Introductionmentioning

confidence: 99%

Evaluations on the potential productivity of winter wheat based on agro-ecological zone in the world

Wang

et al. 2015

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Wheat is the most widely grown crop globally and an essential source of calories in human diets. Maintaining and increasing global wheat production is therefore strongly linked to food security. In this paper, the evaluation model of winter wheat potential productivity was proposed based on agro-ecological zone and the historical winter wheat yield data in recent 30 years obtained from FAO. And the potential productions of winter wheat in the world were investigated. The results showed that the realistic potential productivity of winter wheat in Western Europe was highest and it was more than 7500 kg/hm 2 . The realistic potential productivity of winter wheat in North China Plain were also higher, which was about 6000 kg/hm 2 . However, the realistic potential productivity of winter wheat in the United States which is the main winter wheat producing country were not high, only about 3000 kg/hm 2 . In addition to these regions which were the main winter wheat producing areas, the realistic potential productivity in other regions of the world were very low and mainly less than 1500 kg/hm 2 , like in southwest region of Russia. The gaps between potential productivity and realistic productivity of winter wheat in Kazakhstan and India were biggest, and the percentages of the gap in realistic productivity of winter wheat in Kazakhstan and India were more than 40%. In Russia, the gap between potential productivity and realistic productivity of winter wheat was lowest and the percentage of the gap in realistic productivity of winter wheat in Russia was only 10%.

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Winter wheat yield potentials and yield gaps in the North China Plain

Cited by 150 publications

References 18 publications

Precision Planting Patterns Effect on Growth, Photosynthetic Characteristics and Yield of Winter Wheat under Deficit Irrigation

Precision Planting Patterns Effect on Growth, Photosynthetic Characteristics and Yield of Winter Wheat under Deficit Irrigation

Spatiotemporal Patterns of Crop Irrigation Water Requirements in the Heihe River Basin, China

Evaluations on the potential productivity of winter wheat based on agro-ecological zone in the world

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