
Variability of copper availability in paddy fields in relation to selected soil properties in southeast China
Keywords: اتیلن دی آمین تترا استیک اسید; Cu, copper; TN, total nitrogen; SOM, soil organic matter; AP, available phosphor; AK, available potassium; CEC, cation exchange capacity; GPS, global position system; DTPA, diethylenetriamine penta-acetic acid; EDTA, ethylenediaminetetraacetic acid; CVs,