共 12 条
[1]
Ability for in-season correction of nitrogen deficiency in corn using chlorophy II meters. Varvel G E,Schepers J S,Francis D D. Soil Science Society of America Journal . 1997
[2]
Monitoring nitrogen status of corn with a portable chlorophy II meter. Waskom R M,Westfall D G,Spellman D E,Soltanpour P N. Communications in Soil Science and Plant Analysis . 1996
[3]
Correlation of leaf chlorophy II readings and stem nitrate concentrations in peppermint. Westcott M P,Wraith J M. Communications in Soil Science and Plant Analysis . 1995
[4]
Use of a chlirophy II meter to evaluate the nitrogen status of dryland winter wheat. Follett R H,Follett R F. Communications in Soil Science and Plant Analysis . 1992
[5]
The diagnosis of nitrogen nutrition of rice plants using chlorophy II meter. Chubachi T,Asano I,Oikawa T. Jpn. J Soil Plant Nutr . 1986
[6]
Use of a chlorophy II meter to monitor nitrogen status and schedule fertigation for corn. Blackmer T M,Schepers J S. Journal of Production Agriculture . 1994
[7]
Chlorophy II meter evaluation for nitrogen management in corn. Smael D,Zhang H. Communications in Soil Science and Plant Analysis . 1994
[8]
Using a chlorophyII meter to predict nitrogen fertilizer needs of winter wheat. Fox R H,Piekielek W P,Macneal K M. Communications in Soil Science and Plant Analysis . 1994
[9]
Use of a chlorophy II meter to predict sidedress nitrogen requirement for maize. Piekielik W P,Fox R H. Agronomy Journal . 1992
[10]
Spectra of normal and nutrientdeficient leaves. Abbas A H,Barr R,Hall J D et al. Agronomy Journal . 1974