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首页> 外文期刊>Energy >Bio-energy, water-use efficiency and economics of maize-wheat-mungbean system under precision-conservation agriculture in semi-arid agro-ecosystem
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Bio-energy, water-use efficiency and economics of maize-wheat-mungbean system under precision-conservation agriculture in semi-arid agro-ecosystem

机译：半干旱农业生态系统中精准保存农业下玉米-小麦-绿豆系统的生物能，水分利用效率和经济学

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The maize-wheat-mungbean (MWMb) cropping system is being advocated as an alternative to the traditional rice-based cropping systems of north-western Indo-Gangetic Plains (IGP) to address the issues of energy and nutritional scarcity, residue burning, decline in biomass productivity and water tables. In semi-arid regions, the climate-change-induced variability in rainfall and temperature may have an impact on phenological responses of cereals and pulses which in turn would affect biomass production, economic yield and energy and water-use efficiency (WUE) of the crops. Henceforth, quantification of bioequivalent yields, energy requirement, economics and WUE of MWMb system is essentially required owing to have better understanding of this cropping system. Following a 4-year study was conducted under different tillage and nutrient management. ZT and PB plots had significantly higher pooled average (17.2-203%) biomass productivity, (34.4-39.8%) net returns and (49.8-66.2%) biomass water-use efficiency with lesser (8.5-16.1%) water-use than the CT plots. Significantly higher pooled bioenergetic yields (21.7-35.2%), net returns (31.4-37.8%) and biomass water-use efficiency (30.1-35.2%) was observed in SSNM/Ad-hoc plots compared with FFP plots. The total pooled energy input in ZT/PB and SSNM/Ad-hoc plots was significant (P < 0.05) higher than CT and FFP plots, respectively, with greater net energy output, energy productivity and energy efficiency. The interactions between tillage and nutrient management practices on pooled input energy and energy productivity of MWMb system was significant (P < 0.05). Thus, adoption of conservation tillage (ZT/PB) practices with improved nutrient management (SSNM/Ad-hoc) could be a viable option for achieving higher biomass productivity, water and energy-use efficiency and profitability in MWMb system. (C) 2016 Elsevier Ltd. All rights reserved.
机译：提倡采用玉米-小麦-绿豆（MWMb）种植方式，以取代印度西北恒河平原（IGP）的传统水稻种植方式，以解决能源和营养匮乏，残渣燃烧，下降的问题生物量生产力和地下水位。在半干旱地区，气候变化引起的降雨和温度变化可能会对谷物和豆类的物候响应产生影响，进而影响谷物的生物量生产，经济产量以及能源和水资源利用效率（WUE）。庄稼。今后，由于需要更好地了解该种植系统，因此需要对生物等效产量，能源需求，经济性和MWMb系统的WUE进行量化。在进行了为期4年的研究之后，对不同耕作和养分管理进行了研究。 ZT和PB地块的平均总生物量生产力（17.2-203％），净回报（34.4-39.8％）和（49.8-66.2％）的生物质用水效率显着更高，而用水量则少（8.5-16.1％） CT图。与FFP样地相比，SSNM / Ad-hoc样地中观察到的合并生物能产量（21.7-35.2％），净收益（31.4-37.8％）和生物质水利用效率（30.1-35.2％）显着更高。 ZT / PB和SSNM / Ad-hoc图中的总合并能量输入分别显着（P <0.05）比CT和FFP图高，具有更高的净能量输出，能量生产率和能效。耕作和养分管理实践对MWMb系统的集合输入能量和能量生产率之间的相互作用很显着（P <0.05）。因此，采用保护性耕作（ZT / PB）措施并改善营养管理（SSNM / Ad-hoc）可能是在MWMb系统中实现更高的生物质生产率，水和能源利用效率以及盈利能力的可行选择。 （C）2016 Elsevier Ltd.保留所有权利。

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