Decreased greenhouse gas intensity of winter wheat production under plastic film mulching in semi-arid areas
文献类型： 外文期刊
作者： Li, Yue 1 ; Feng, Hao 1 ; Wu, Wenjie 1 ; Jiang, Yu 3 ; Sun, Jian 8 ; Zhang, Yuefang 9 ; Cheng, Hui 1 ; Li, Cheng 1 ; Dong, Qin'ge 1 ; Siddique, Kadambot H. M. 10 ; Chen, Ji 2 ;
作者机构： 1.Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China
2.Aarhus Univ, Dept Agroecol, DK-8830 Tjele, Denmark
3.Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Modern Crop Prod, Natl Engn & Technol Ctr Informat Agr, Key Lab Crop Physiol & Ecol Southern China, Nanjing 210095, Peoples R China
4.Cent South Univ Forestry & Technol, Coll Forestry, Changsha 410004, Hunan, Peoples R China
5.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
6.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China
7.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Peoples R China
8.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Resources, Beijing 100101, Peoples R China
9.Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China
10.Univ Western Australia, UWA Inst Agr, Dept Agroecol, Perth, WA 6001, Australia
11.Univ Western Australia, Sch Agr & Environm, Perth, WA 6001, Australia
关键词： Global warming potential; Greenhouse gas emissions; Greenhouse gas intensity; Grain yield; Loess Plateau
期刊名称：AGRICULTURAL WATER MANAGEMENT （ 影响因子：6.611； 五年影响因子：6.574 ）
ISSN： 0378-3774
年卷期： 2022 年 274 卷
页码：
收录情况： SCI
摘要： Greenhouse gas intensity (GHGI), the evaluation of GHG emissions per unit yield rather than per unit land area, has recently received much attention. Plastic film mulching (PFM) is one of the major agricultural practices in semi-arid areas, but few studies have synthetically studied the effects of PFM on GHGI, grain yield, soil char-acteristics, and their potential relationships at different winter wheat (Triticum aestivum L.) growing stages. Here in the semi-arid Chinese Loess Plateau, we simultaneously investigated two cropping systems from 2018 to 2020: PFM with 100 % cover and no film mulching (control). Averaged across two growing seasons, the PFM treatment significantly increased soil temperature, water-filled pore spaces and soil water storage, while sustaining high aboveground biomass (31.9 %) and grain yield (45.5 %). The PFM treatment significantly increased cumulative N2O emissions by 56.2 %, CO2 emissions by 39.7 %, and CH4 uptake by 151.4 % compared to the control treatment. GHGI are on average 14.2 % lower in the PFM treatment than in the control treatment. Moreover, the PFM treatment significantly improved soil enzyme activities (alkaline phosphatase, catalase, invertase, and urease) and microbial biomass carbon and nitrogen from grain filling to maturity stage. Altogether, the re-ductions in GHGI suggest that PFM-induced increases in grain yield could outweigh the adverse impacts on GHG emissions, underscoring the potential to apply PFM for sustainable intensification of crop production in semi-arid areas.
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