This indicates that it is one of important reason for wheat yield increase by enhanced harvest index with applying N.
表明施氮提高收获指数是促进小麦增产的主要原因之一。
On the contrary, N utilization and absorption by cotton decreased. At harvest, a higher percentage of nitrogen remained in vegetative organs.
与此相反，棉花所吸收的氮量和肥料氮利用率均比纯作春棉降低，收获期有较多的氮素滞留于营养器官和铃壳中。
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