机译:覆盖作物和灌溉对北美中部大平原半干旱农业生态系统中土壤微生物群落和酶的影响
USDA-ARS, Central Great Plains Research Station, Akron CO 80720(USA);
USDA-ARS, Central Great Plains Research Station, Akron CO 80720(USA);
USDA-ARS, Cropping Systems Research Laboratory, Wind Erosion and Water Conservation Unit, Lubbock TX 79415(USA);
USDA-ARS, Central Great Plains Research Station, Akron CO 80720(USA);
Department of Crop and Soil Sciences, Washington State University, Pullman WA 99164-6420(USA);