稻鸭共作有机农业模式的能值评估_席运官.pdfVIP

　2006 2 　 17 　2 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 CHINESE JOURNA L OF APPLIED ECOLOGY, Feb.2006, 17 (2)∶237～242 ＊ 1,2 1 ＊＊ 席运官 　钦　佩 1 2 (, 2 10093;, 2 10042) 【】　(Ⅰ)(Ⅱ) , ., Ⅰ, 、 , , (EYR)、 (FYE)、(ESI ) Ⅱ1.57、14.1 8.71 ; (EIPS)Ⅰ0, Ⅱ-0.66;Ⅰ Ⅱ, (EIR), (ELR) Ⅱ40.1%18.3%; ⅠⅡ, 、Ⅱ15.7%、9.6% 29.6%;- , Ⅰ、Ⅱ50%、102.6% 136.4%. , Ⅰ. 　　　　　 　100 1-9332 (2006)02-0237-06　　Q148　　A 1,2 1 1 Emergy value evaluation on rice-duck organic farming mode.XI Yunguan , QIN Pei (School of L if e Sci- 2 ence, Nanj ing University , Nanj ing 210093, China;Nanj ing Institute of Environmental Science, State Envi- ronmentalProtection Administration, N anj ing 210042, China).-Chin .J .App l.Ecol., 2006, 17 (2):237 ～ 242. Empl ying emergy value evaluati n meth d, this paper c mpared the ec l gical and ec n mic benefits f rice-duck rganic farming sy stem (m deⅠ)and c nventi nal rice-wheat r tati n system (m deⅡ)in Shanghai suburb. The results sh wed that m deⅠhad better emergy benefits, higher self-rganizing ability and sustainability, and higher pr duct safety.The net emergy y ield rati (EYR), feedback rati f yield emergy (FYE ), and emergy sustainable index (ESI)f m deⅠw ere respectively 1.57, 14.1, and 8.71 times as much as th se f m de Ⅱ, and the emergy index f pr duct safety (EIPS)w as 0 in m deⅠbut -0.66 in m deⅡ.The emergy investment rati (EIR)and envir nmental l ading rati (ELR)f m deⅠwere 40.1%and 18.3% f m deⅡ, respective- ly, suggesting that m de Ⅰhad less envir nmental pressure than m de Ⅱ.M de Ⅰhad l wer ec n mic benefits than m deⅡ.The ec n mic utput, gr ss inc me,