施氮水平处于0~240kgN·hm-2时,水稻产量、氮素积累总量(total N accumulation,TNA)和稻田渗漏液NH4+-N、NO3--N和总N浓度随着氮素水平的提高而显著增加;在较高氮肥水平(240...
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total n accumulation
总累积量
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However, the increase of the two parameters above were not simultaneously, the increment of soil NO3-N accumulation was much higher than that of total N accumulation in wheat plants.
施用氮肥能提高小麦拔节期和成熟期植株全氮积累量和土壤NO3-N积累量,但两者并非同步增加,土壤NO3-N积累量增加的幅度远远大于植株全氮积累量的增长幅度。
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