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.
由工农业废料配制的两种堆肥作为试验用的基质：C1——酿造啤酒等废料（酵母和麦芽）加修剪下的柠檬树枝；
Two composts prepared from agroindustrial wastes were assayed as substrates: C1 from brewing waste (yeast and malt) plus lemon tree prunings;
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