Title: Effects of Different Novel Functional Urea on the Yield and Efficiency of Nitrogen Absorption and Utilization of Hybrid Rice
Abstract:To investigate the effects of novel functional urea on efficiency of nitrogen use and yield of rice,the super hybrid rice cultiva(C Liang-you No.343) was used as test material and six treatment modes ...To investigate the effects of novel functional urea on efficiency of nitrogen use and yield of rice,the super hybrid rice cultiva(C Liang-you No.343) was used as test material and six treatment modes with different urea were conducted.No nitrogen application(0N),conventional urea(control),controlled release urea(CRU),polypeptide urea(PU),seaweed urea(SU) and zinc coating urea(ZCU)were designed to analyze the formation characteristics of yields,the uptake and accumulation features of nutrients(nitrogen,phosphorus,and potassium),and the efficiency of nitrogen use.Results showed that the rice yields after application with CRU,PU,SU and ZCU were 10.21,10.36,10.24 and 10.31 t/hm2,respectively,with 8.73%,10.33%,9.05% and 9.80% than higher that of the control.Compared with the control the nitrogen absorption and utilization efficiency after application with PU,ZCU,SU and CRU increased by 52.77%,81.92%,56.21% and 65.41%,and agronomic efficiency of rice increased by 49.94%,59.15%,51.86% and 56.08%,respectively.Both the nitrogen and fertilizer partial factor productivity increased significantly.The nitrogen physiological efficiency was decreased(especially for PU and ZCU by 12.56% and 5.65%,respectively).The nitrogen absorption and dry matter accumulation increased significantly in the medium-later growing stages.Application of different functional urea in super hybrid rice could increase the nutrients absorption and utilization.The yields of rice after application of the four novel functional urea had no significantly different.Read More
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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