书刊等的
剩余物;其余的人 leaf N. (书刊等的)一张 remark n. 话;评论;vt.
和K 含量在暗棕色森林土和草甸沼泽地土壤上较高;
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。