共 2 条
[1]
Using a chlorophyll meter to predict nitrogen fertilizer needs of winter wheat[J] . R. H. Fox,W. P. Piekielek,K. M. Macneal.Communications in Soil Science and Plant Analysis . 1994 (3-4)
[2]
Chlorophyll meter readings in corn as affected by plant spacing[J] . T. M. Blackmer,J. S. Schepers,M. F. Vigil.Communications in Soil Science and Plant Analysis . 1993 (17-1)