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中后期追氮明显提高小麦叶片氮含量,叶片氮含量跟籽粒产量和蛋白质含量有显著的相关关系。四分体期叶片氮含量与产量呈正相关,籽粒形成期叶片氮含量与籽粒蛋白质含量呈正相关。亩施氮素0～12.5kg为产量和蛋白质含量“同步增长区”,12.5～17.5kg为“异步徘徊区”,17.5kg以上为“同步下降区”。相同施氮水平,药隔肥产量最高,扬花肥蛋白质含量最高。
In the late stage of nitrogen uptake significantly increased the nitrogen content of wheat leaves, leaf nitrogen content with grain yield and protein content were significantly correlated. There was a positive correlation between leaf nitrogen content and grain yield in the tetrad stage and a positive correlation between leaf nitrogen content and grain protein content in the grain forming stage. Acreage 0 ~ 12.5kg of nitrogen is “synchronous growth zone” of yield and protein content, 12.5 ~ 17.5kg is “asynchronous wandering zone”, and 17.5kg or above is “synchronous decline zone”. The same level of nitrogen fertilizer, the highest yield of drug partition, the highest protein content of flowering fertilizer.