作物学报 ›› 2011, Vol. 37 ›› Issue (08): 1485-1490.doi: 10.3724/SP.J.1006.2011.01485
史磊刚,范士超,孔凡磊,陈阜*
SHI Lei-Gang,FAN Shi-Chao,KONG Fan-Lei,CHEN Fu
摘要: 提高农作物生产的碳效率是实现低碳农业的重要途径之一。为探明农业生产中的碳效率,本文以河北吴桥县为例,基于农户生产调查数据,利用投入产出法,对华北平原冬小麦、夏玉米和棉花3种主要作物生产的碳投入、碳产出和碳效率进行了评价。结果表明,冬小麦、夏玉米和棉花生产的碳投入总量分别为943.47±225.14、525.74±134.73和513.60±138.94 kg CE km-2,其中化肥和电能占总量的大部分,分别约占60%和25%。3种作物碳的产出总量分别为8 430.70±774.45、7 194.50± 754.58和5 486.00±547.69 kg CE hm-2,其中秸秆约占总量的50%,经济产量约占34%,根约占17%。冬小麦、夏玉米和棉花碳的生产效率分别为7.95±2.55、15.90±4.34和7.60±2.92 kg kg-1 CE,碳的经济效率分别为13.28±4.56、21.47±5.86和76.70±29.45 CHY kg-1 CE,碳的生态效率分别为9.59±3.07、14.57±3.98和11.69±4.49 kg C kg-1 CE,作物间的碳效率差异显著,初步表明在华北平原,夏玉米生产的碳综合效率最高,棉花次之,冬小麦最低。
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