The Compost of Azolla and Rice Straw

abonos nitrogenados abonos verdes anabaena anabaena azollae arroz asia sudoccidental asie du sud-ouest azolla azolla pinnata azote cereales cereals compost compostage composting composts cultivation cultivo cyanobacteria engrais vert ferns green manures helechos iran islamic republic nitrogen nitrogen fertilizers paille paille de riz paja paja de arroz pratique culturale rice rice straw riz southwestern asia straw