共 12 条
[1]
Comparisons of corn leaf ni-trogen concentration and chlorophyll meter readings. Schepers J S,Francis D D,Vigil M F. Communica-tions in Soil Science and Plant Analysis . 1992
[2]
Techniques for monitoring crop nitrogenstatus in corn. Blachmer TM,Schepers J S. Communications in Soil Science and Plant Analy-sis . 1994
[3]
Using leaf color charts to es-timate leaf nitrogen status of rice. Yang W H,Peng S B,Huang J Let al. Agronomy Journal . 2003
[4]
Light reflectance compared with other nitrogen stress measurement in corn leaves. Blackmer T M,Schepers J S,Varvel G E. Agronomy Journal . 1994
[9]
Techniques for monitoring crop nitrogen status in corn[J] . T. M. Blackmer,J. S. Schepers.  Communications in Soil Science and Plant Analysis . 1994 (9-10)