【摘要】 为探讨大范围区域的稻田养鱼在通常年景下对农业资源利用效率的影响状况,采集和研究了广西桂北、桂西北、桂东南三个区域稻田养鱼较多的5个县中的8个稻田养鱼村屯和1个非稻田养鱼县的1个非稻田养鱼村屯共262户农户、50.59hm2稻田生产的投入产出数据,结果是:⑴稻谷产量:8个稻田养鱼村屯的稻谷单产量均高出同县域2004年稻别相同的单产量,其中3个村屯高出量达极显著,另5个村屯未达显著;⑵化肥用量:调查有量化指标的6个稻田养鱼村屯,其单位稻田化肥年用量均极显著低于本县域2004年度单位耕地的化肥平均用量;⑶农药经济投入:有量化指标的6个稻田养鱼村屯:①其农药经济投入量比1个非稻田养鱼村屯的农药经济投入量最低少404.93元/hm2、最高少1098.98元/hm2;②每生产1吨稻谷投入的农药经济量比非稻田养鱼村屯最低少25.30元/hm2、最高少91.84元/hm2;⑷纯收益:桂东南区域稻田养鱼村屯的综合经济效益(纯收益)高于同区域的非稻田养鱼村屯的综合经济效益5362.73元/hm2。微观现状研究表明:广西稻田养鱼显著地提高了农业资源利用效率。更多还原

【Abstract】 For research the actual-effect of fish culture in paddy fields on utilization ratio of agricultural resource in large-scale area in a usual year,the method is to collect and analyze first-hand data of input and output,Which come from 262 farmers and their family and 50.59 hektare on the yield of rice paddy in 8 villages of 5 counties (QuanZhou,XingAn,RongShui,SanJiang,PingNan) with more paddy-fields-fish-culture and 1 village of 1 counties (HengXian) without paddy-fields-fish-culture.This villages are located in the northern region,northwest region,southeast region of Guangxi.Here are the results:(1)The rice yield:The rice yields per time of 8 villages with paddy-field-fish-culture had a higher output than the average of their county.Three of them had an extremely higher output,and the others five villages were not so much notable output.(2)The chemical fertilizer usage:6 inquired villages with paddy-field-fish-culture had a chemical fertilizer usage plan,Their chemical fertilizer usage is notable lower than the other villages without paddy-field-fish-culture in the same counties.(3)The pesticide usage:six of villages with paddy-field-fish-culture had the pesticide usage plan.①The pesticide input of 6 inquired village with paddy-field-fish-culture was 404.93(yuan/hm2) lower than the input of a village without paddy-field-fish-culture at least,the lowest was 1098.98(yuan/hm2).②The pesticide input of 6 inquired village with paddy-field-fish-culture for a ton of rice yield was 25.30(yuan/hm2) lower than the input of a village without paddy-field-fish-culture at least,the lowest was 91.84(yuan/hm2).⑷The net income:The net income of villages with paddy-field-fish-culture was averagely 5362.73 (yuan/hm2) higher than the net income of villages without paddy-field-fish-culture in the southeast region of Guangxi.Micro-study show that the paddy-field-fish-culture can remarkably promote the utilization-ratio of agriculture resource in Guangxi province.更多还原