果树种植户每年可以从养牛养猪户那里购买一批粪肥建起沼气池，然后添加修剪下来的果树树枝。
Fruit tree farmers can buy one load of manure a year from a cow or pig farm to start their digester and add wood pruned from fruit trees.
敏感性分析显示，户用沼气池建设具有较强的抗风险能力。
The sensitivity analysis shows that building household biogas digester has a strong capability to resist risks.
评价结果显示，户用沼气池的建设在两地均产生了较大的环境效益。
Evaluation results show that the household biogas digester construction in the two cities have great environmental benefit.
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