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去年,我们在营口市老边区三家子村做了一次沼气肥养鱼试验。利用一块1.8亩、水深为1～1.5米的水塘,作为试验塘;附近的另一块面积为1.1亩的水塘为
Last year, we did a biogas fertilizer fish experiment in Sanjiazi Village, Laobian District, Yingkou. Using a 1.8-acre reservoir of 1 to 1.5 meters of water as a test pond; another nearby pond of 1.1-mu