Effect of Coated Urea on Yield，Quality and Nitrogen Using Efficiency of Rape(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effect of Coated Urea on Yield，Quality and Nitrogen Using Efficiency of Rape

Author(s):: WANG Jiqing; JIA Shufen; (College of Agriculture and Forestry，Hebei North University，Zhangjiakou，Hebei 075000)

Abstract:: Taking rape as test material，the effect of different treatments with the application of zero nitrogen (N)，urea and coated urea on yield，quality and N use efficiency of rape was studied by pot experiment in greenhouse，combined with normal determination.The results showed that yield of rape significantly increased with the increasement of N application rate，compared with urea，the application of coated urea significantly increased yield of rape，decreased root shoot ratio of rape.The application of coated urea could significantly decrease nitrate content of rape，and improve plant vitamin C content，soluble sugar and protein content.Compared with urea，the application of coated urea could also increase partial factor productivity from applied N (PFPN)，agronomic efficiency of applied N (AEN) and apparent recovery efficiency of applied N (REN) of rape，and reduce N loss.In sum，coated urea was one kind of applied prospect fertilizer that could increase yield with less fertilizer，improve quality and increase N use efficiency of rape.

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Last Update: 2016-05-05