本试验结果表明:在地膜覆盖条件下细菌、放线菌、真菌等数量增加。其中细菌、放线菌的数量随玉米生育期的发育逐渐增多,而真菌的数量则逐渐减少。硝化细菌、好气性纤维素分解菌、好气性自生固氮菌等的数量,覆膜者也高于不覆膜的。由于地膜覆盖为土壤微生物提供了有利条件,使其数量增加、活性增强、加速土壤养分转化,提高土壤有效养分含量,使玉米获得增产效果。 The test results show that: the number of bacteria, actinomycetes, fungi, etc. increased under plastic film mulching conditions. Among them, the number of bacteria and actinomycetes gradually increased with the growth of corn and the number of fungi decreased gradually. Nitrifying bacteria, aerobic cellulolytic bacteria, aerobic autotrophic bacteria and other numbers, the coating is also higher than the non-coated. As the plastic film mulching provides favorable conditions for soil microorganisms, the quantity and activity of the mulching film increase, the activity is accelerated, the soil nutrient conversion is accelerated, the effective nutrient content of the soil is increased, and the yield of the corn is increased.