地理科学进展 ›› 2008, Vol. 27 ›› Issue (1): 99-104.doi: 10.11820/dlkxjz.2008.01.013

• 土地开发、利用与农业地理 • 上一篇    下一篇

现代种植业系统及粮食生产能量转化效率的 动态分析———以山前平原河北栾城县为例

陈冬冬,高旺盛,隋鹏,吴天龙   

  1. 中国农业大学农学与生物技术学院区域农业发展研究中心,北京100094
  • 收稿日期:2007-05-01 修回日期:2007-12-01 出版日期:2008-01-25 发布日期:2008-01-25
  • 通讯作者: 高旺盛,教授、博士生导师,主要从事宏观农业与区域农业、农业生态系统管理以及农业发展战略政策等方面的研 究.E- mail:wshgao@cau.edu.cn E-mail:wshgao@cau.edu.cn
  • 作者简介:陈冬冬(1978-),女,博士生,从事生态经济与可持续发展研究.E- mail:dongbula_cdd@163.com.
  • 基金资助:

    "十一五"国家科技支撑计划(2006BAD02A15)和国家自然科学基金(30471010)课题资助.

Dynamic Analysis on Energy Efficiency of Modern Planting System and Gr ain Production ———A Case Study of Luancheng, Hebei

CHEN Dongdong, GAO Wangsheng, SUI Peng, WU Tianlong   

  1. College of Agronomy and Biotechnology, Centre of Regional Farming System Research, China Agricultural University, Beijing 100094, China
  • Received:2007-05-01 Revised:2007-12-01 Online:2008-01-25 Published:2008-01-25

摘要:

本文在分析栾城县现代种植业结构演替基础上,对当地1984- 2006 年种植业系统能流动态分析表明:以秸 秆直接还田为主的有机能投入从90 年代中期占绝对优势,能流循环指数从1984 年0.5 持续提高到2000 年0.62, 无机能后期快速增长使有机能和无机能不断扩大的趋势有所趋缓。而粮食生产的能流动态分析除表明上述趋势外 认为总体能效从1993 年1.78 下降到目前1.67 并不显著,同时无机能增加主要是农机、灌溉等耗能引起,有机能促 进系统内生循环的同时与能源动力、化肥等无机能投入不断协调形成稳定高产的组合体系。未来优化当地农业生 产结构,节能减耗,提高资源利用率需要加强秸秆间接还田的农牧结合制度,节水灌溉制度及与之配套的作物配置 结构。

关键词: 动态分析, 粮食生产, 能量转化效率, 种植业系统

Abstract:

Based on analysis on structure change of modern planting in Luancheng county, the paper discussed the local dynamic efficiency of energy input in planting system from 1984 to 2006 and draw some conclusions as follows: the organic energy input with the majority of straw directly returned to field has been the leading part of energy input since the middle of 1990s, and the tendency of enlarged gap between organic energy and industrial energy input began to have a little turn because the industrial energy subsidies increased rapidly in the later period. We further analyzed the energy flow structure of grain production, finding that the general energy efficiency was not down dramatically from 1.78 in 1993 to 1.67 now, which indicates that increasing organic energy input required more energy engineering and chemical fertilizer input, and they coordinated to form a steady and high- productivity system. But a problem which has been raised at the same time is that the most part of industrial energy is machine fuels and electricity consumed by irrigation. That indicates the farming system of combination of agriculture and animal husbandry, the water- saving irrigation and the corresponding crop structure distribution are three important tasks to improve the agricultural production construction and energy and resource- efficiency.

Key words: dynamic analysis, energy efficiency, grain production, planting system