共 15 条
[11]
Nitrogen indicators, uptake and utilization efficiency in a maize and barley rotation cropped at different levels and sources of N fertilization[J] . F. Montemurro,M. Maiorana,D. Ferri,G. Convertini.  Field Crops Research . 2006 (2)
[15]
Ecology of exotic races of maize.I.Ieaf number and tillering of16races under four temperatures and two photo-periods. Stevenson J C,Goodman M M. Crop Science . 1972