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我区属于黄土丘陵风沙区,土壤质地松散、瘠薄,加之干旱少雨,单位面积产量很低。随着水力冲淤造农田新技术的发展,近年来新淤了不少滩地,其淤泥大部来自沙梁生土,所含有机质和其它养分较少。怎样改良上述土壤使其向高产稳产过度?从一九七四年开始我们分别在盆儿洼和东窖沟大队布置定位试验,采取绿肥牧草压青,增施有机肥料,施用黑矾,腐殖酸铵和菌肥5406等措施,结合深耕改土进行了一些试验研究
I belong to the loess hilly sand area, the soil texture loose, infertile, coupled with dry and little rain, the yield per unit area is very low. With the development of new technologies of farmland with hydraulic scouring and silting, many new silt beaches have been newly silted in recent years. Most of the silt comes from sandy loam and contains less organic matter and other nutrients. How to improve the above soil so that it will produce high and stable yield? From the beginning of 1974, we respectively, in Pierswa and Dongjiaogou brigade layout test, adopt green manure grass pressing, adding organic fertilizer, applying black alum, humus Ammonium Sulfate and Bacteriostasis 5406 and other measures, combined with deep plowing and soil improvement conducted a number of experimental studies