论文部分内容阅读
陕西省合阳县沿黄河有池塘433hm2,是该省的主要商品鱼基地之一。池塘形成于1990年代“挖塘抬田,以渔改碱”工程,位于黄河中上游合阳段滩涂,水源为地下水上渗补充,池水水深2～3.5m,池底多为深锅底形,底泥较厚,达到30～90cm,池水易形成温跃层。池水为微咸水,硫酸盐含量较大,
Heyang County, Shaanxi Province along the Yellow River ponds 433hm2, is the province’s main commodity fish base. Pond was formed in the 1990s, “digging ponds to lift the farm, relying on fishery to alkali” project, located in the upper reaches of the Yellow River Heyang section of tidal flats, water for groundwater seepage replenishment, the water depth of 2 ~ 3.5m, Sediment thicker, reaching 30 ~ 90cm, easy to form a thermocline pool. Pool water is brackish water, sulfate content is larger,