共 3 条
[1]
Microbial growth and nitrogen immobilization in the root zone of barley ( Hordeum vulgare L.), Italian ryegrass ( Lolium multiflorum Lam.), and white clover ( Trifolium repens L.)[J] . T. A. Breland,L. R. Bakken.Biology and Fertility of Soils . 1991 (2)