Browsing Sociedad Chilena de la Ciencia del Suelo by Subject "NH4+-15N"
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EFFECT OF NITROGEN FERTILIZER AND MAIZE STRAW INCORPORATION ON NH4+15N AND N0(3) -15N ACCUMULATION IN BLACK SOIL OF NORTHEAST CHINA AMONG THREE CONSECUTIVE CROPPING CYCLES
Journal of soil science and plant nutrition v.10 n.4 2010.