蒙阴县岭砂土面积17.7万亩。占耕地面积的34.5％。岭砂土在土壤分类中属棕壤性土。由于土层薄,土壤保水保肥性差,主要种植花生、甘薯、黄烟等一年一熟作物。据调查分析,在人多地少的山地丘陵区。要改变岭砂土一年一作为一年二作.关键是调节土壤水分状况。为此,1983年我们在蒙阴县吉宝峪大队岭砂土上进行了提水喷灌试验。有效喷灌面积70亩。 Lingyin Ling area of ​​177,000 mu of sand. 34.5% of arable land. Ling sand in the soil classification is brown soil. Due to the thin soil, soil water and fertilizer poor, the main planting peanuts, sweet potatoes, yellow smoke and other crops a year. According to the survey and analysis, people rarely land in mountainous hilly areas. To change the ridge of sand for one year a year as the second. The key is to regulate soil moisture conditions. To this end, in 1983, we conducted a water sprinkler irrigation test on the ridge sand in the Kebao Valley of Mengyin County. Effective irrigation area of ​​70 acres.