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1、概况七克台示范区地处山北,位于七克台镇东面7公里(四大队一小队)。耕地面积992亩,耕作层土壤为沙土。无结构,渗水良好。水溶盐0.62%,含碳酸钙4.43%,有机质0.41%,全氮0.029%,全磷0.040%,速效磷2.59ppm,速效钾279.7ppm。该地区夏季炎热,日照充足,昼夜温差大。年平均气温11.3℃,≥10℃的年积温4525.5℃,无霜期192天,适宜种植葡萄、棉花、瓜类等经济作物。该地区干旱少雨,多年平均降雨量为25.3毫米,年均蒸发量为2751毫米。作物灌溉用水主要靠地下水和大河水供给,其中机井水占80%,大河水占20%。由于近十年来在示范区北部地下水
1, Overview Seven Ketai demonstration area is located in northern Shandong, is located seven kilometers east of the town seven kilometers (a small team of four brigades). 992 acres of arable land, tillage layer of soil for the sand. No structure, good water seepage. 0.62% of water soluble salt, 4.43% of calcium carbonate, 0.41% of organic matter, 0.029% of total nitrogen, 0.040% of total phosphorus, 2.59ppm of available phosphorus and 279.7ppm of available potassium. The area is hot in summer, with plenty of sunshine and large temperature differences between day and night. The annual average temperature of 11.3 ℃, ≥ 10 ℃ annual accumulated temperature of 4525.5 ℃, frost-free period of 192 days, suitable for planting grapes, cotton, melons and other cash crops. The area is arid and dry, with an average annual rainfall of 25.3 millimeters and an average annual evaporation of 2751 millimeters. Crop irrigation water is mainly supplied by groundwater and river water, of which 80% are well water and 20% are large rivers. Due to nearly a decade of groundwater in the northern part of the demonstration area