Straw returning and one-time application of a mixture of controlled release and solid granular urea to reduce carbon footprint of plastic film mulching spring maize

Bai, Jing; Li, Yang; Zhang, Jie; Xu, Feng; Bo, Qifei; Ze-lin, Wang; Li, Ziyan; Li, Shiqing; Shen, You-Gen; Yue, Shanchao

doi:10.1016/j.jclepro.2020.124478

Cited by 48 publications

(29 citation statements)

References 53 publications

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“…Li et al (2020) further pointed out that the CF is strongly affected by the amount of straw used, and when compared with no STR treatment, the CF did not increase until field application of one-third of the STR and then increased as straw application was further increased. Bai et al (2021), under the same natural conditions in semiarid areas of Northwest China, showed that STR increased GHG emissions, but the CF decreased by 45-55% due to the strong acceleration of soil organic carbon (SOC) accumulation. Therefore, the effects of STR on the CF observed by different researchers in different regions are inconsistent.…”

Section: Introductionmentioning

confidence: 99%

Effect of straw retention on carbon footprint under different cropping sequences in Northeast China

Song¹,

Zhu²,

Gong

et al. 2021

Environ Sci Pollut Res

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Inappropriate farm management practices can lead to increased agricultural inputs and changes in atmospheric greenhouse gas (GHG) emissions, impacting climate change. This study was initiated in 2012 to assess the potential for straw retention to mitigate the negative environmental impact of various cropping systems on the Songnen Plain using the life cycle assessment (LCA) method combined with field survey data. Straw retention (STR) and straw removal (STM) treatments were established in continuous corn (CC) and corn-soybean rotation (CS) systems in a split-plot experiment. The effects of straw retention on the carbon footprint (CF) of cropland under different cropping systems were compared. The CF under CC was 2434–2707 kg CO2 ha−1 year−1, 49–57% higher than that under CS. Nitrogen fertilizer produced the most CO2, accounting for 66–80% of the CF. The carbon balances of the CC and CS systems with STR were positive, with annual carbon sequestrations of 9633 and 2716 kg CO2 ha−1 year−1, respectively. The carbon balance (CB) of CC-STR was 255% higher than that of CS-STR. This study demonstrates that STR under CC cultivation is an environmentally friendly practice for agricultural production, can help achieve high-yield and low-carbon production in rainfed cropland, and can support the sustainable development of grain production in Northeast China.

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Section: Introductionmentioning

confidence: 99%

Effect of straw retention on carbon footprint under different cropping sequences in Northeast China

Song¹,

Zhu²,

Gong

et al. 2021

Environ Sci Pollut Res

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“…This can be a good option to alternative plastic film and worth futher study for agricultural sustainable development and environmental protection. In addition, although the study and some others similar studies accomplished over a 2-years period 49 – 51 , some studies are more than 2 years, such as 4 or 6 years 1 , 20 , to reduce the effect of weather variability from year to year on crop growth, yield, irrigation and energy budget, carbon footprint 1 , 20 . Thus, this study needs to be conducted over a long period of time for further refine the results.…”

Section: Discussionmentioning

confidence: 95%

Energy budget and carbon footprint in a wheat and maize system under ridge furrow strategy in dry semi humid areas

2021

Sci Rep

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The well-irrigated planting strategy (WI) consumes a large amount of energy and exacerbates greenhouse gas emissions, endangering the sustainable agricultural production. This 2-year work aims to estimate the economic benefit, energy budget and carbon footprint of a wheat–maize double cropping system under conventional rain-fed flat planting (irrigation once a year, control), ridge–furrows with plastic film mulching on the ridge (irrigation once a year, RP), and the WI in dry semi-humid areas of China. Significantly higher wheat and maize yields and net returns were achieved under RP than those under the control, while a visible reduction was found for wheat yields when compared with the WI. The ratio of benefit: cost under RP was also higher by 10.5% than that under the control in the first rotation cycle, but did not differ with those under WI. The net energy output and carbon output followed the same trends with net returns, but the RP had the largest energy use efficiency, energy productivity carbon efficiency and carbon sustainability among treatments. Therefore, the RP was an effective substitution for well–irrigated planting strategy for achieving sustained agricultural development in dry semi-humid areas.

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“…Although the price of urea is low, the cost of topdressing is high, and the high cost but labor saving feature of the NC treatment might be a tradeoff in terms of practical production [54,55]. Our previous study showed that the NC treatment obtained higher net return than the NU treatment [56,57]. Therefore, the NC treatment might be a better N application type, which increased root distribution in the deep soil layer and improved the use of deep soil water in the arid and semi-arid climate of the Loess Plateau.…”

Section: Discussionmentioning

confidence: 99%

Optimized Nitrogen Application Increases Soil Water Extraction by Changing in-Season Maize Root Morphology and Distribution in Rainfed Farmland

Tang

Sun

et al. 2020

Agronomy

Self Cite

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The proper promotion of a deep root system is important for maize cultivation to improve water use efficiency in the arid and semi-arid Loess Plateau. Here, a field experiment was conducted to assess the effect of combined controlled release urea and normal urea on root growth and water extraction of maize in dryland fields. Maize in the combined controlled release urea and normal urea treatment had greater root systems compared to those in the normal urea treatment and no N application treatment. Compared to the urea treatment, combined controlled release urea and normal urea advanced the root length density and root weight density in the 0–10 cm soil layer at R1 stage by 30.99% and 45.03% in 2016 and by 20.54% and 19.13% in 2017. The root length density also increased at the dent stage (R5) by 52.05% and 47.75% in 2016 and 2017, and root weight density increased by 19.58% in 2016. Combined controlled release urea and normal urea promoted production of fine roots and root distribution, as well as decreased soil water storage (SWS) in the deep soil layer at the R5 stage. The grain yield was positively correlated with root length density and root weight density in the topsoil layer at the R1 stage and in the whole soil profile at the R5 stage, suggesting that better root system management is helpful for increasing crop grain yield. Therefore, this work demonstrates that combined use of controlled release urea and normal urea to higher crop yields might attribute to increasing water extraction by optimizing in-season maize root morphology and distribution in the rainfed farmland of the Loess Plateau.

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Straw returning and one-time application of a mixture of controlled release and solid granular urea to reduce carbon footprint of plastic film mulching spring maize

Cited by 48 publications

References 53 publications

Effect of straw retention on carbon footprint under different cropping sequences in Northeast China

Effect of straw retention on carbon footprint under different cropping sequences in Northeast China

Energy budget and carbon footprint in a wheat and maize system under ridge furrow strategy in dry semi humid areas

Optimized Nitrogen Application Increases Soil Water Extraction by Changing in-Season Maize Root Morphology and Distribution in Rainfed Farmland

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