黄土高原南部丘陵沟壑区果畜沼复合经营模式生态经济效益分析

研究了黄土高原南部丘陵沟壑区27户果畜沼复合经营模式的生态经济效益.(1)果畜沼复合经营模式一定程度上改良了土壤,降低土壤容重,增加了土壤养分;(2)果畜沼复合经营模式可以提高果园地优果率和商品果率,降低畸形果率和病虫害发生次数;(3)增加了沼气这种可再生能源,减少了石化燃料的需求,保护了环境;(4)该经营模式具有良好的经济效益,增加了农村的收入,提高了果园的经济生产力.因此,果畜沼复合经营模式具有良好的生态、经济效益,在新农村建设中具有重要的意义,值得大面积推广.

Ecological Economic Benefit Evaluation of Fruit-Pig-Methane Compound Management Mode in Southern Loess Hilly Gully Region

Based on field investigation,trace recording,and experimental data analysis,ecological economic principles are applied to study ecological economic benefit of fruit-pig-methane compound management mode in the southern loess hilly gully region.The results indicate that the mode can ameliorate soil in a certain degree and increase soil porosity and the contents of soil nutrients.It can also increase the percentage of excellent and commodity fruit and reduce the percentage of abnormal fruit and the times of di...