Physiological studies on the N2-fixing blue-green algae in rice fields

ammonium sulphate caracteres de rendimiento chlormequat composante de rendement cyanophyta fixation de l'azote ga gibberelline nitrate de potassium nitrato de potasio nitrogen fixation oryza sativa potassium nitrate rendement rendimiento salinidad salinity sulfate d'ammonium sulfato de amonio urea uree yield components yields