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我国的三北地区(东北、华北、西北)约有一亿余亩的低洼盐碱地,其中不宜种植,地表层水位浅的面积约有4500万亩以上。由于这一特定水域均属咸水范畴,且水化学组成具有多样性及复杂性,水质除具有较高的pH值、高碱度特点外,有些水质离子间比例失调,有些离子严重缺乏,除极少部分盐度较低的水域开展了淡水鱼类养殖外,绝大部分仍长期处于荒芜状态。 因此,充分利用我国低洼盐碱地这一宝贵的国土资源,克服不利因素制约,变废为宝,研究不同类型盐
There are about 100 million mu of low-lying saline-alkali land in China’s Three North regions (northeast, north China, and northwest), of which it is unfit for planting and the surface area has a shallow water area of about 45 million mu. As this specific water area belongs to the category of saltwater, and the chemical composition of water is diversified and complex, besides the high pH value and high alkalinity characteristics of water quality, some water ions have imbalanced ions and some ions are severely lacking. Besides Most of the freshwater fish farms are cultivated in very few salinity waters and remain in the barren state for a long time. Therefore, taking full advantage of the valuable land and resources of low-lying saline-alkali land in our country, overcoming unfavorable factors and turning waste into treasure, we study different types of salt