In upper of the medium, the element accumulation of n, Ca, Mg, cu, Fe and Mn may be harmful to the plant.
试验显示营养液中的氮和钙、镁、铜、铁、锰等元素在基质上部富集，可产生肥料盐害。
Leaf N/ chlorophyll content and SPAD value increased with the increasing N fertilizer, and the lower leaves were more sensitive to the soil N supply than the upper leaves.
下位叶比上位叶对土壤氮的供应状况更为敏感，随着施氮量的增加，水稻叶片氮素含量、叶绿素含量、SPAD值相应的增加，而下位叶的增幅更明显。
This algorithm includes two levels:the lower level of N basic swarms and the upper level of elite swarm.
此算法采用上下两层，即下层N个基础种群和上层一个精英种群。
Something n**ensical because it's an election year and neither wants the other to get the upper hand… on Olympic uniforms.
有些事是无意义的，因为今年是个选举年，哪一方都不希望对方在奥运制服问题上获得更多民众支持。
Something n**ensical because it's an election year and neither wants the other to get the upper hand… on Olympic uniforms.
有些事是无意义的，因为今年是个选举年，哪一方都不希望对方在奥运制服问题上获得更多民众支持。
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