...增施N肥 打井补灌 [gap=935]Key words Flatland，Interplanting summer potato with corn or sorghum，Increasing N fertilizer，Sinking a well to irri— ...
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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 amount of K increased observably with the increasing of N fertilizer application, but increased indistinctively with the increasing of K fertilizer in each organ.
各器官的钾素积累量随施氮量的增加而增加的幅度较大，但随钾肥用量的增加而增加的幅度较小。
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