N-loss of ammonia-volatilizing from urea applied in both red soil and yellow soil with the rotation of Digitaria ischaemum in spring and winter radish in autumn是什么意思_N-loss of ammonia-volatilizing from urea applied in both red soil and yellow soil with the rotation of Digitaria ischaemum in spring and winter radish in autumn在线翻译_英语_读音_用法_例句