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低洼盐碱农田由于地下水位高和表土层含盐量高,农作物单产及经济效益都很低,一般只相当于高产农田的1/2或1/3。因此,改良低洼盐碱地对于达到均衡增产、实现农业翻番具有重要意义。一、青铜峡县低洼盐碱地的现状与分布青铜峡县位于本区黄灌区中部,土地总面积281万亩。目前全县实际耕地40万亩(在册面积为30.3万亩),其中自流灌溉面积39.5万亩,占农田总面积的98.8％,扬水面积只有0.5万亩,占1.2％。
Low-lying saline-alkali farmland Due to the high groundwater level and the high salinity of the topsoil, the yields and economic benefits of crops are very low, generally only equivalent to 1/2 or 1/3 of the high-yield farmland. Therefore, improving low-lying saline-alkali land is of great significance to achieve balanced production increase and double agriculture. First, Qingtongxia County low-lying saline-alkali land status and distribution Qingtongxia County is located in the central Yellow River irrigation area, the total land area of 281 mu. At present, the actual cultivated area in the county is 400,000 mu (book area: 303,000 mu), of which the gravity irrigation area is 395,000 mu, accounting for 98.8% of the total farmland area and the pumping water area is only 0.5 million mu, accounting for 1.2%.