Productivity and water use in forage-winter wheat cropping systems across variable precipitation gradients on the Loess Plateau of China

Lai, Xingfa; Yang, Xiaonan; Wang, Zikui; Shen, Yuying; Ma, Longshuai

doi:10.1016/j.agwat.2021.107250

Cited by 12 publications

(5 citation statements)

References 30 publications

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“…Over the four growing seasons in our study, the S‐W system demonstrated an advantage for maintaining a higher wheat grain yield. The main reason for this result was that oat and vetch depleted soil water during the summer fallow period, and soybean stored more soil water for subsequent wheat growth (Lai, Yang et al., 2022). Therefore, we recommend the S‐W system for maintaining wheat grain production on the Loess Plateau.…”

Section: Discussionmentioning

confidence: 99%

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Productivity variation and stability of intensive forage‐winter wheat cropping systems on the Loess Plateau, China

et al. 2023

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Integrating forage crops into the continuous winter wheat (Triticum aestivum L.) cropping system can be used for increasing rural population income and maintaining grain production on the Loess Plateau. The objective of this study was to comprehensively evaluate economic yield (EY yield ), dry matter yield (DM yield ), crude protein yield (CP yield ), wheat equivalent yield (WE yield ), and food equivalent yield (FEU yield ) when incorporating annual forages (oat [Avena sativa L.], soybean [Glycine max L.], and vetch [Vicia sativa L.]) into the traditional fallow-winter wheat system from a 4-year (2016-2020) experiment on the Loess Plateau of China. Results showed that incorporating annual forages into the continuous wheat system significantly increased system productivity. Among the four growing seasons, average system DM yield values for fallow-winter wheat (F-W), oat-winter wheat (O-W), soybean-winter wheat (S-W), and vetch-winter wheat (V-W) were 10348.52, 13854.15, 14679.94, and 12185.29 kg ha −1 , respectively. The average wheat EY yield values were 3777.82, 3115.19, 4020.76, and 3180.71 kg ha −1 , respectively . The average forage DM yield values were 0.00, 5497.19, 4284.64, and 2817.50 kg ha −1 , respectively. The S-W system had the highest DM yield and CP yield (1350.10 kg ha −1 ), and also had DM yield with the smallest variation (CV = 15.21%). The O-W, S-W, and V-W systems produced FEU yield values that were 48.67%, 68.46%, and 30.53%, respectively, greater than the F-W system. When considering market prices and yields, the S-W system increased wheat gain yield and had the highest WE yield (6607.90 kg ha −1 ). Therefore, in consideration of forage quality, winter wheat production, and system productivity, we recommend the S-W system for local farmers on the Loess Plateau.

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Section: Discussionmentioning

confidence: 99%

“…More detailed information about the experimental treatments and management practices was provided by Lai et al. (2022).…”

Section: Methodsmentioning

confidence: 99%

Productivity variation and stability of intensive forage‐winter wheat cropping systems on the Loess Plateau, China

et al. 2023

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“…Water stress limits the development of the root system, which results in decreased leaf area, leaf number per plant, leaf size, and leaf longevity 45 . For instance, an oat–wheat rotation system study indicated that the hay yield of oat had the greatest value with increased precipitation of 30% in the Loess Plateau with MAT and MAP of 9.5 °C and 535 mm 46 . Using official Finnish variety trial data and farm data from 1976 to 2018, a study examined the effects of precipitation at key growth phases on oat yield formation of oats and reported that the water stress that occurred at the flowering stage before harvesting caused a reduction in oat hay yields 47 .…”

Section: Discussionmentioning

confidence: 99%

“…45 For instance, an oat-wheat rotation system study indicated that the hay yield of oat had the greatest value with increased precipitation of 30% in the Loess Plateau with MAT and MAP of 9.5 °C and 535 mm. 46 Using official Finnish variety trial data and farm data from 1976 to 2018, a study examined the effects of precipitation at key growth phases on oat yield formation of oats and reported that the water stress that occurred at the flowering stage before harvesting caused a reduction in oat hay yields. 47 However, the inefficient conversion of precipitation to grain yields may have been caused by waterlogging 48 or low water productivity with high precipitation.…”

Section: Discussionmentioning

confidence: 99%

Divergent response of hay and grain yield of oat: effects of environmental factors and sowing rate

Liu

Mao

et al. 2022

J Sci Food Agric

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BACKGROUND Oat (Avena sativa L.) is recognized for its impressive productivity in marginal environments, and the sowing rate is an important crop management practice that potentially enhances oat productivity. Previous studies have reported the effect of sowing rate on oat yield; however, the results from such studies are inconsistent. Thus, based on 43 studies across eight countries, this study aimed to assess changes in hay and grain yields in response to sowing rate and, in combination with a boosted regression tree, to evaluate and rank the dominant factors (e.g. climate conditions, soil conditions, and sowing rate) affecting changes in hay and grain yields of oat. RESULTS The results revealed that increasing the sowing rate significantly increased the response ratio of grain yields and hay yields by averages of 7.3% and 7.9% respectively. However, the response ratios of grain yields and hay yields in response to changes in sowing rate were affected by different factors. Climate condition and mean annual precipitation primarily affected the response ratios of hay yields, whereas the sowing rate dominated changes in the response ratios of grain yields, with the response ratios of grain yields peaking at a sowing rate of 85 kg ha−1. CONCLUSION Optimizing the sowing rate with site‐specific environmental conditions could be a potential strategy for profitable oat production, given that oat can be produced under marginal environments (e.g. cool–wet climates and soil with low fertility). © 2022 Society of Chemical Industry.

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“…The Loess Plateau, the second largest plateau in China, is a typical dryland agricultural region with frequent drought events. It is an essential part of China's arid and semiarid regions, covering approximately 64 million ha and supporting approximately 100 million people (Lai et al, 2022). The average annual precipitation in the region is approximately 400 mm and provides critical value for ecological and crop maintenance and growth.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of water vapor sources and precipitation contributions to drought and wet events on the Chinese Loess Plateau

Liu

Wang²,

Wang³

et al. 2022

Theor Appl Climatol

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In this paper, the standardized precipitation evapotranspiration index (SPEI) at the monthly scale was calculated based on ground observations to obtain different drought and wet events at the surface of the Loess Plateau in summer from 2000-2017. Using the NECP FNL (National Centers for Environmental Prediction Final) data for the same period, backward simulations with the FLEXPART model were performed to obtain the water vapor transport characteristics and potential evaporative sources corresponding to different dry and wet events. Finally, the contribution of water vapor sources to precipitation on the Loess Plateau was obtained. The results show that the primary sources of water vapor on the Loess Plateau during dry and wet summer events are concentrated in the Loess Plateau and the Yunnan-Kweichow Plateau regions and sporadically distributed in the Altay region of Xinjiang, as well as at the junction of China, Kazakhstan and Mongolia. The evaporation extent and intensity in northern Xinjiang and Mongolia increase when the surface experiences wet-normal-dry events.The local internal circulation on the Loess Plateau contributes to 31.3% and 36.8% of the water vapor in drought and wet events, respectively. Influenced by the westerly wind belt and southwest monsoon, the precipitation contributions of the Yunnan-2 Kweichow Plateau are 11.2% and 13.1%, respectively, and those of Mongolia are 14.6% and 11.9%, respectively. The water vapor contributions from the Arabian Sea and Bay of Bengal in the south are insignificant. The results aid in understanding the mechanisms of drought and wet events on the Loess Plateau.

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Productivity and water use in forage-winter wheat cropping systems across variable precipitation gradients on the Loess Plateau of China

Cited by 12 publications

References 30 publications

Productivity variation and stability of intensive forage‐winter wheat cropping systems on the Loess Plateau, China

Productivity variation and stability of intensive forage‐winter wheat cropping systems on the Loess Plateau, China

Divergent response of hay and grain yield of oat: effects of environmental factors and sowing rate

Characteristics of water vapor sources and precipitation contributions to drought and wet events on the Chinese Loess Plateau

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