Energy auditing of long-term conservation agriculture based irrigated intensive maize systems in semi-arid tropics of India

被引：40
|
作者：
Parihar, C. M. [1 ,6 ]
Jat, S. L. [1 ]
Singh, A. K. [1 ]
Kumar, B. [1 ]
Rathore, N. S. [2 ]
Jat, M. L. [3 ]
Saharawat, Y. S. [4 ]
Kuri, B. R. [5 ]
机构：
[1] ICAR Res Complex, IIMR, New Delhi 110012, India
[2] ICAR Res Complex, New Delhi 110012, India
[3] Int Maize & Wheat Improvement Ctr CIMMYT, NASC Complex, New Delhi 110012, India
[4] ICARDA, Kabul 11082010, Afghanistan
[5] IPNI, South Asia Program, Gurgaon 122016, Haryana, India
[6] ICAR Res Complex, IARI, New Delhi 110012, India
来源：
ENERGY | 2018年 / 142卷
关键词：
Diversified crop rotations; Energy-use efficiency; Non-renewable and renewable energy; Permanent beds; Protein equivalent yield; Zero tillage; WATER-USE EFFICIENCY; BED PLANTING SYSTEM; RICE-WHEAT ROTATION; GANGETIC PLAINS; CROP-ROTATION; YIELD TRENDS; SOIL QUALITY; ZERO-TILLAGE; ZEA-MAYS; PRODUCTIVITY;
D O I：
10.1016/j.energy.2017.10.015
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In a 7-year study, we assessed the conservation agriculture (CA) practices [permanent bed (PB) and zero tillage (ZT)] and conventional till (CT) in 4-diversified maize rotations [maize-wheat-mungbean (MWMb), maize-chickpea-Sesbania green manure (MCS), maize-mustard-mungbean (MMuMb) and maize-maize-Sesbania green manure (MMS)]. Results showed that ZT and PB plots consumed lower energy (7 yr average) in land preparation (49.7-51.5%) and irrigation (16.8-22.9%) compared to CT. Significantly higher system output (10.6-14.5%) and net energy (14.8-18.9%) returns, biomass productivity (9.9-14.1%), energy use-efficiency (13.4-17.1%), and bio-energetic based adult equivalent yield (17.3-19.8%) was recorded in ZT and PB than the CT. Among the crop rotation plots the net energy-output (35,3346 MJ ha(-1)), biomass yield (11.87 Mg ha(-1)), energy use efficiency (4.16), and bio-energetic based adult equivalent yield (46 adults ha(-1) year(-1)) was recorded significantly (P <= 0.05) higher in MWMb plots. Interaction between tillage and crop rotations were significant (P <= 0.05) for mean system output and net energy returns, biomass productivity and bio-energetic based adult equivalent yield. Thus, our long-term study suggests that CA practices with diversified maize based rotation (MWMb) could be a feasible alternative to attain high energy-use efficiency, biomass productivity and bio-energetic based adult equivalent yield in north-western India and other similar agro-ecologies of South Asia. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：289 / 302
页数：14
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