Optimizing soil and fertilizer management strategy to facilitate sustainable development of wheat production in a semi-arid area: A 12-year in-situ study on the Loess Plateau
文献类型: 外文期刊
作者: Wu, Peng 1 ; Zhao, Gang 2 ; Huang, Hua 1 ; Wu, Qi 1 ; Bangura, Kemoh 5 ; Cai, Tie 3 ; Sun, Min 1 ; Xue, Jianfu 1 ; Zhang, Jianjun 2 ; Dang, Yi 2 ; Wang, Shuying 2 ; Zhou, Gang 2 ; Fu, Jian 4 ; Yang, Kejun 4 ; Fan, Tinglu 2 ; Gao, Zhiqiang 1 ;
作者机构: 1.Shanxi Agr Univ, Coll Agr, Collaborat Innovat Ctr High Qual & Efficient Prod, State Key Lab Sustainable Dryland Agr, Taigu 030801, Shanxi, Peoples R China
2.Gansu Acad Agr Sci, Inst Dryland, Lanzhou 730000, Gansu, Peoples R China
3.Northwest A&F Univ, Chinese Inst Water saving Agr, Coll Agron, Minist Agr & Rural Affairs,Key Lab Crop Physi Ecol, Yangling 712100, Shaanxi, Peoples R China
4.Heilongjiang Bayi Agr Univ, Coll Agron, Key Lab Low carbon Green Agr Northeastern China, Minist Agr & Rural Affairs PR China, Daqing 163000, Heilongjiang, Peoples R China
5.South China Agr Univ, Coll Engn, Guangzhou 510642, Peoples R China
6.Shanxi Agr Univ, Coll Agr, Taigu 030801, Shanxi, Peoples R China
关键词: Antioxidant system; Photosynthesis; Resource utilization; Soil and fertilizer management strategy; Soil water and nitrogen
期刊名称:FIELD CROPS RESEARCH ( 影响因子:5.8; 五年影响因子:6.9 )
ISSN: 0378-4290
年卷期: 2023 年 302 卷
页码:
收录情况: SCI
摘要: Context: The low precipitation and low soil fertility in the Loess Plateau region of China limit the sustainable development of farmland. No-tillage, straw mulching, or planting green manure can improve soil water storage or soil quality. However, further research is needed to optimize these soil and fertilizer management strategies to maximize yield and effectively utilize resources.Objective: The present study aimed to determine the optimal soil and fertilizer management strategies to maximize wheat growth and water/nitrogen utilization efficiency, while minimizing nitrogen fertilizer input.Methods: Five different soil and fertilizer treatments were tested on the Loess Plateau between 2009 and 2021, including traditional tillage followed by bare soil (CK), no-till with straw mulching (NTSM), no-till with straw mulching followed by leguminous green manure (OPT), and reductions in N fertilizer inputs of 10% (OPT10) and 20% (OPT20) under OPT.Results: The average results from 12 years of research revealed that the soil water content (SWC) and NO3--N content in the 0-20 cm soil depth under OPT were higher by 4.3% and 13.4% compared to CK (P < 0.01), and the length and surface area of the wheat roots were higher by 20.9% and 11.0% (P < 0.01), respectively. Optimized soil and fertilizer management delayed leaf senescence and enhanced the antioxidant and photosynthetic capacities of the wheat crop. Compared with CK, the net photosynthetic rate and superoxide dismutase activity were 38.6% and 11.6% higher under OPT, respectively, and no significant differences were observed between OPT and OPT10. Optimized soil and fertilizer management promoted wheat yield formation, water and fertilizer use efficiency, and OPT obtained the highest yield (4497.3 kg ha(- 1)), N uptake (138.7 kg ha(- 1)), and water use efficiency (WUE, 13.3 kg ha(- 1)). Compared with CK, OPT increased the wheat yield, N uptake, WUE, and WP by 21.5%, 16.7%, 16.6%, and 12.6%, respectively, and there were no significant differences between OPT10 and OPT.Conclusions: Optimizing the soil and fertilizer management strategies increased the soil water and NO3--N contents, delayed leaf senescence, enhanced the leaf antioxidant and photosynthetic capacities, promoted wheat yield formation and efficient resource utilization. A 10% reduction in N fertilizer input based on no-till, straw
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