| 不同耕作方式和秸秆还田条件下能值比较分析 |
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| 引用本文： | 李志光,李志锋.不同耕作方式和秸秆还田条件下能值比较分析[J].气象与环境科学,2015,38(2):12-17. |
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| 作者姓名： | 李志光 李志锋 |
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| 作者单位： | 1. 中国农业大学资源与环境学院,北京100193;孟津县气象局,河南孟津471100
2. 洛阳市气象局,河南洛阳,471000 |
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| 基金项目： | 国家“十一五”科技支撑计划项目“北方集约化粮田污染综合防控技术集成与示范研究项目” |
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| 摘 要： | 以山东桓台县华北集约化农业生态系统试验站小麦—玉米轮作农田生态系统为例,利用能值分析方法,对不同耕作方式(翻耕、旋耕、免耕)和秸秆还田(清茬、粉碎还田)下农田生态系统的能值利用进行了比较分析。结果表明:粉碎还田模式的可更新有机能比率比清茬的高出4~5倍,说明粉碎还田的可持续发展指数大于清茬的,有利于保护环境;耕作方式上,可持续发展指数表现为免耕的翻耕的旋耕的,说明免耕法具有明显的可持续发展优势,应适当推广。
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| 关 键 词： | 能值分析 耕作方式 秸秆还田 |
Emergy Comparative Analysis Under Different Tillage Methods and Straw Returning Management |
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| Li Zhiguang,Li Zhifeng.Emergy Comparative Analysis Under Different Tillage Methods and Straw Returning Management[J].Meteorological and Environmental Sciences,2015,38(2):12-17. |
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| Authors: | Li Zhiguang Li Zhifeng |
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| Abstract: | Taking wheat maize rotation farmland ecological system of Shandong Huantai county of north China intensive agriculture ecosystem experimental station as an example, emergy utilization of farmland ecosystem was carried under different tillage methods (Conventional Tillage CT, Rotary Tillage RT, No Tillage NT) and straw levels (Residue R, No Residue NR) by comparative emergy analysis. It was concluded that: the renewable organic emergy ratio of R was 4-5 times higher than that of NR, and the sustainability index of R was greater than NR and was beneficial to environmental protection. The tillage methods showed that NT> CT > RT, and illustrated that the sustainable development of no tillage had obvious advantage and should be generalized appropriately. |
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| Keywords: | emergy analysis tillage method straw returning |
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