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为探明滨海滩涂围垦区农作物氮、磷累积特征,采集了江苏省盐城市不同围垦年代耕地春秋两季8种主要农作物样品,分析了农作物不同器官氮、磷、粗蛋白含量以及氮、磷化学计量特征。结果表明:盐城市滩涂围垦区耕地农作物氮含量偏低,磷含量略高,氮磷比相对较低,需要适当补充氮素;不同围垦年代耕地同类作物氮、磷、粗蛋白含量和氮磷比均没有明显差异,农作物氮、磷累积与滩涂围垦时间关系不大;农作物根部氮、磷含量呈极显著正相关,而茎叶、籽粒的氮、磷含量相关性均不显著。
In order to find out the accumulation of nitrogen and phosphorus in crops in coastal reclamation area, eight main crops were collected from spring and autumn in different reclamation years in Yancheng City of Jiangsu Province. The contents of nitrogen, phosphorus, crude protein and nitrogen and phosphorus in different organs of crop were analyzed Metrological characteristics. The results showed that the nitrogen content of cultivated land in the reclaimed land of reclamation area was low, the content of phosphorus was slightly higher and the ratio of nitrogen to phosphorus was relatively lower, which needed to be supplemented with nitrogen. The content of nitrogen, phosphorus, crude protein, There was no significant difference between them. The accumulation of N and P in crops had little relation with tidal flat reclamation time. There was a significant positive correlation between N and P contents in crop roots, but no significant correlation between N and P in stem, leaves and grains.