共 8 条
[7]
Carbon and nitrogen in the root-zone of barley ( Hordeum vulgare L.) supplied with nitrogen fertilizer at two rates[J] . Erick Zagal,Sigfus Bjarnason,U L F Olsson.Plant and Soil . 1993 (1)
[8]
Computersim ulation ofchanges in soilm ineralnitrogen and crop nitrogen during autum n,winterand spring. AdiscottT M,W hithm ore A P. J.Agric.Sci.Cam b . 1987