本文通过对“蓄水覆盖丰产沟”土壤微生物的数量、分布、生物活性的测定,从土壤生物活性的角度说明“蓄水覆盖丰产沟”在提高作物产量,改土培肥上有较大的作用,同时也为我国北方旱区正确推广“丰产沟”提供理论上的依据。 In this paper, the quantity, distribution and biological activity of soil microbes in “Fengshuigou with water storage coverage” were measured. From the perspective of soil bioactivity, it was demonstrated that “water harvesting covering Fengshuigou” could increase crop yield and improve soil fertility At the same time, it also provides the theoretical basis for the correct popularization of “Dachang ditch” in the northern arid region of China.