Neutron probe calibration correction by temporal stability parameters of soil water content probability distribution

Scientia Agricola

K. Reichardt²  O. Portezan¹  O.o.s. Bacchi²  J.c.m Oliveira²  D. Dourado-neto¹  J.e. Pilotto²  M. Calvache¹ 

[1] ,USP Centro de Energia Nuclear na Agricultura Piracicaba SP ,Brazil

关键词: soil water content;    neutron probe;    calibration;    time stability;    spatial variability;    umidade do solo;    sonda de nêutrons;    calibração;    estabilidade temporal;    variabilidade espacial;   

DOI  :  10.1590/S0103-90161997000300003

来源: SciELO

【 摘 要 】

A neutron probe calibration correction is proposed in order to reduce soil water content variability, assumed to be a consequence of improper calibrations relations. The time stability of spatially measured soil water content data is used to correct the intercepts of linear calibration relations. This procedure reduced the coefficients of variation of soil water content data from 4 to less than 2% in a Rhodic Kanhapludalf.

【 授权许可】

CC BY   
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