Subsoiling combined with irrigation improves carbon emission and crop water productivity of winter wheat in North China Plain

Jiao, Fengli; Hong, Shengzhe; Cui, Jichao; Zhang, Qingfen; Li, Ming; Shi, Ruilin; Han, Hairong; Li, Quanqi

doi:10.1016/j.agwat.2022.107685

Cited by 10 publications

(6 citation statements)

References 85 publications

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“…Many factors consistently influenced the yield and WP, which indicated that both maize yield and WP can be increased with a signal agronomy practice. For example, deep tillage could expand root growth space and increase water storage, thus increasing the yield and WP synergistically [35,36]. In addition, factors other than those mentioned in this study can influence crop growth.…”

Section: Limiting Factors For the Yield And Wpmentioning

confidence: 82%

Improving Yield and Water Productivity of Rainfed Summer Maize in Smallholder Farming: A Case Study in Hebei Province, China

et al. 2022

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Because of the strong competition for a limited resource of water and demand for food production, understanding yield and water productivity (WP) potentials and exploitable gaps in the current production of intensively rainfed maize (Zea mays L.) is essential on the regional scale in China. In this study, we conducted 411 site–year on-farm trials to assess the actual yield and WP of rainfed summer maize and its yield and WP potentials in Hebei Province, China. Each on-farm trial contained detailed information of three different treatments: no fertilizer application (CK), current farmers’ practices (FP, depending on local farmer field fertilization management), and optimum fertilizer application (OPT, depending on soil testing and balanced fertilization). Results revealed that the yield and WP of rainfed summer maize in Hebei Province were 7635 kg ha−1 and 20.7 kg ha−1 mm−1, respectively, and the yield and WP potentials were 12,148 kg ha−1 and 32.0 kg ha−1 mm−1, respectively. Thus, the farmers attained 62.8% of the yield potential and 64.7% of the WP potential. A wide variation was observed in terms of the yield and WP across various types of farming. Compared with high-yield and high-WP (HYHW) farming, in low-yield and low-WP (LYLW) farming, the yield decreased by 24.9% and WP decreased by 44.4%. Nitrogen fertilizer application rate and rain were the most significant factors for yield and WP gaps among farmers, respectively. Other factors, such as solar radiation (tSola), soil available phosphorus content (AP), potassium fertilizer application rate, and grass-referenced evapotranspiration from planting to maturity (ET0), contributed the most to the variations in the yield and WP. Scenario analysis indicated that the optimization of fertilization levels from current to optimal for each farming could increase the yield and WP by 9.7% and 14.8%, respectively; closing gaps between the farming groups and achievement of the standard of HYHW farming by all farmers could increase the yield and WP by 14.8% and 35.5%, respectively; and achieving the yield and WP potentials could increase the yield and WP by 59.1% and 54.8%, respectively. These findings provided farming-based evidence that optimal nutrient management, advanced and climate-adapted agronomy practices, and higher soil fertility are essential for future maize production.

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Section: Limiting Factors For the Yield And Wpmentioning

confidence: 82%

Improving Yield and Water Productivity of Rainfed Summer Maize in Smallholder Farming: A Case Study in Hebei Province, China

et al. 2022

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“…This indicates that irrigation during the jointing stage provides key water for normal wheat production and forms the basis for yield formation. 19 Under different irrigation scenarios, the CEE in the SR was significantly higher than that in the SM during the two growing seasons of winter wheat (P < 0.05). This was a result of the increased production and reduced soil CO 2 emissions under the SR treatment.…”

Section: Effects Of Straw Returning Methods On Yield and Watercarbon ...mentioning

confidence: 88%

“…In the two winter wheat growing seasons, the winter wheat yield in I1 increased by 20.45% and 19.38% compared to I0, whereas the yield in I2 only increased by 3.45% and 7.68% compared to I1. This indicates that irrigation during the jointing stage provides key water for normal wheat production and forms the basis for yield formation 19 …”

Section: Discussionmentioning

confidence: 99%

“…The soil respiration rate was calculated using 19 :

F = \frac{60 HMP}{8.314 (273 + T)} \times \frac{dC}{dt} \times 10^{- 6}

where F is the soil respiration rate (g m −2 h −1 ); M is the relative molecular weight of CO 2 (g mol −1 ); H is the height of the gas chamber (m); P is the air pressure in the closed gas chamber (pa); T is the temperature in the gas chamber (°C); and dC/dt is the change of CO 2 concentration per unit time.…”

Section: Methodsmentioning

confidence: 99%

“…Each measurement was conducted from 09.00 h to 11.00 h on a sunny day during each key growing season from sowing to harvesting, and 3 days after irrigation of winter wheat. The soil respiration rate was calculated using 19 :…”

Section: Soil Respiration Ratementioning

confidence: 99%

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Response of soil CO₂ emissions and water‐carbon use efficiency of winter wheat to different straw returning methods and irrigation scenarios

Liu,

Gao,

Zhang

et al. 2023

J Sci Food Agric

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BACKGROUNDThe shortage of water resources and the increase of greenhouse gas emissions from soil seriously restrict the sustainable development of agriculture. Under the premise of ensuring stable yield of winter wheat through reasonable irrigation scenario, finding a suitable straw returning method will have a positive effect on agricultural carbon sequestration and emission reduction in North China Plain (NCP).RESULTSStraw burying (SR) and straw mulching (SM) were adopted based on traditional tillage under in the winter wheat growing season of 2020–2021 and 2021–2022. Three irrigation scenarios were used for each straw returning method: no irrigation (I0), irrigation 60 mm (I1) at jointing stage and irrigation of 60 mm each at the jointing and heading stages (I2). Soil moisture, soil respiration rate, cumulative soil CO2 emissions, yield, water use efficiency (WUE) and soil CO2 emission efficiency (CEE) were mainly studied. The results showed that compared to SM, SR improved the utilization of soil water and enhanced soil carbon sequestration. SR reduced soil respiration rate and cumulative soil CO2 emissions in two winter wheat growing seasons, and increased yield by increasing spike numbers. In addition, with an increase in the amount of irrigation, soil CO2 emissions and yield increased. Under SR‐I1 treatment, WUE and CEE were the highest. SR‐I1 increases crop yields while reducing soil CO2 emissions.CONCLUSIONThe combination of straw burying and irrigation 60 mm at jointing stage is a suitable straw‐returning irrigation scenario, which can improve water use and reduce soil CO2 emission in NCP.This article is protected by copyright. All rights reserved.

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Effects of Subsoiling Depth on Soil Aggregate Stability and Carbon Storage in a Clay-Loam Soil

Wang

Liu

Obalum

et al. 2023

J Soil Sci Plant Nutr

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Subsoiling combined with irrigation improves carbon emission and crop water productivity of winter wheat in North China Plain

Cited by 10 publications

References 85 publications

Improving Yield and Water Productivity of Rainfed Summer Maize in Smallholder Farming: A Case Study in Hebei Province, China

Improving Yield and Water Productivity of Rainfed Summer Maize in Smallholder Farming: A Case Study in Hebei Province, China

Response of soil CO₂ emissions and water‐carbon use efficiency of winter wheat to different straw returning methods and irrigation scenarios

Effects of Subsoiling Depth on Soil Aggregate Stability and Carbon Storage in a Clay-Loam Soil

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Subsoiling combined with irrigation improves carbon emission and crop water productivity of winter wheat in North China Plain

Cited by 10 publications

References 85 publications

Improving Yield and Water Productivity of Rainfed Summer Maize in Smallholder Farming: A Case Study in Hebei Province, China

Improving Yield and Water Productivity of Rainfed Summer Maize in Smallholder Farming: A Case Study in Hebei Province, China

Response of soil CO2 emissions and water‐carbon use efficiency of winter wheat to different straw returning methods and irrigation scenarios

Effects of Subsoiling Depth on Soil Aggregate Stability and Carbon Storage in a Clay-Loam Soil

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Response of soil CO₂ emissions and water‐carbon use efficiency of winter wheat to different straw returning methods and irrigation scenarios