稻鱼鸭种养共生模式效益的研究及综合评价

Benefit analysis and comprehensive evaluation of rice-fish-duck symbiotic mode1

摘要: 3年稻鱼鸭种养共生模式效益的研究表明，稻鱼鸭种养共生模式水稻增产lO%以上，增收鲜鱼1036．5kg／hm²，成鸭238．9～489．3kg／hm²;水稻土壤全N、P、K和有机质含量分别增加27．9%、44．3%，6．5%和28．2%，提高了土壤肥力；水稻植株虫口量最少。稻鱼鸭种养共生模式提高了稻田产量和效益，其生态环境质量指教为0．8155，属良性循环的高教复合生态农业模式。

Abstract: Three years’study demonstrated that rice-fish-duck symbiotic model can improve rice production by over 10%，meanwhile produce more than 1036．5kg／hm² of fish and 238．9～489．3kg／hm² of adult duck．Total N,P,K and soil organic matter contents of paddy field are increased by 27．9%，44．3%,6．5% and 28．2% respectively．The number of insect pests is decreased ．The symbiotic system largely increased the output and economic benefit．An ecological index (EI)of 0．8155 suggested that it was a high efficient and comprehensive eco-agriculture mode1．