【摘要】 田间试验表明，深沟窄畦结构扩大了稻田生物的生境容量，畦麦沟鱼、稻鱼共生结构提高了稻田生产力，稻麦年产量稳定达到10．84～11.83t／ha，鱼产量3.11～4.20t／ha，在稻田产出中鱼占有最大产值优势度，系统能流结构表现出新特点，生态效率高。更多还原

【Abstract】 The results of field trial showed that a habitat capacity of biocenosis was expanded by the structure ofridge and ditch. The structure of ridge-wheat or ditch-fish and a rice-fish mutualistic symbiosis raised the productivity on rice field: the economic output of the grain gained 10. 8~ 1 1. 83t/ha year and the fish 3. 11~ 4. 20t/ha year onthe rice field. The fish output was the most superiority of output value. The structure of energy flow displayed a newfeature and ecological efficiency of the system was raised during planting and fishing.更多还原