leaf n content 叶氮含量
leaf N concentration 叶片含氮量
leaf n and p stoichiometry 叶片np化学计量学
manchurian n rhododendron leaf 照山白
Fan n Leaf 扇叶病毒病
boxthorn n leaf 枸杞叶
The Fuji, Ralls and Golden Delicious of apple varieties, 120 samples were collected from 20 orchards in Yanshan mountain area and the leaf n, p, K contents were analyzed.
采集了燕山山区20个苹果园富士、国光和金冠等品种的120份叶样，对叶片中氮、磷和钾含量进行了分析。
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。
The heritability of N content in grain and leaf and N utilization efficiency were high.
子粒、叶片含氮量和氮利用效率的遗传率相对较高。
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