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Effects of mulching types on the yield and water utilization by broomcorn millet (Panicum miliaceum): Results of a study in the Loess Plateau, China

文献类型: 外文期刊

作者: Tian, Lixin 1 ; Yu, Shaopeng 2 ; Zhang, Lei 3 ; Yang, Junxue 4 ; Feng, Baili 2 ; Song, Youhong 1 ;

作者机构: 1.Anhui Agr Univ, Sch Agron, Hefei 230036, Anhui, Peoples R China

2.Northwest A&F Univ, Coll Agron, State Key Lab Crop Stress Biol Arid Areas, Minist Agr, Yangling 712100, Shaanxi, Peoples R China

3.Gansu Acad Agr Sci, Crop Res Inst, Lanzhou 730070, Gansu, Peoples R China

4.Ningxia Acad Agr & Forestry Sci, Guyuan Branch, Guyuan 756000, Ningxia, Peoples R China

关键词: Mulching practices; Broomcorn millet; Hydrothermal environment; Photosynthetic performance; Water use efficiency

期刊名称:JOURNAL OF ENVIRONMENTAL MANAGEMENT ( 影响因子:8.7; 五年影响因子:8.4 )

ISSN: 0301-4797

年卷期: 2023 年 345 卷

页码:

收录情况: SCI

摘要: Mulching practices have been widely adopted to improve rainfed crop productivity. However, the major resources including water, heat, and light that influenced the yield of broomcorn millet in different dryland regions have rarely been explored. A three-season field experiment with three mulching practices i.e. traditional planting with non-mulching (TP), ridge-furrow mulching system (RF), and plastic film mulching (PFM) was conducted in three semi-arid regions in the Loess Plateau, China, i.e. Guyuan city (GY), Huining county (HN), and Yulin city (YL) between 2020 and 2022 to investigate the impacts of mulching regimes on soil hydrothermal conditions, agronomic characteristics, leaf photosynthetic properties, broomcorn millet yield, and water use efficiency (WUE). Results showed that both PFM and RF treatments increased soil temperature and moisture, and enhanced dry matter accumulation by promoting leaf photosynthetic capacity and chlorophyll content, thereby improving broomcorn millet yield and WUE. PFM and RF increased the average broomcorn millet yield by 15.08% and 24.86% at GY site, 20.86% and 25.61% at HN site, and 15.75% and 25.57% at YL site, respectively, and increased the average WUE by 16.31% and 27.48% at GY site, 23.21% and 28.80% at HN site, 15.55% and 28.57% at YL site, respectively. Partial least squares path modeling analysis revealed that soil moisture was an important environmental factor in determining broomcorn millet yield. Overall, RF practice can be taken to improve the management of agricultural climate factors and maximize yield, thereby promoting the sustainable development of dryland agriculture in the Loess Plateau.

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