| Excavating coal influence on crop production was studied by trials with potato, mung bean, black bean, millet and durra in Gaojiapan. The trial site lies in dent in 2005 and no-dent area. According as the crops growth periods, Evaluate excavating coal influence on farmland productivity, Sum up agricultural restore technology. The result show excavating coal didn't influence on crops seedling, but influence more on the crop growing and yield. By analyzing excavating coal influence on crop production mechanism, excavating coal mainly influence on soil moisture. The crannies lying in dent augment evaporation, witch result in dent soil moisture under no-dent soil moisture. The difference is key factor restricting agriculture in excavating coal region. The author think different restoring technologies were used in different collapse by excavating coal. According as analysis above, advance irrigation, agrotype choice, fertilization, fields manage, sluice cultivation, autumn fertilization and frond return to field etc. agricultural technology. Moreover, soil fertility spareness and humus tenuity are ubiquity problems in research field, which result in crops low yield.
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