应用生态学报2018，Vol.29Issue(1)：133-140,8.DOI:10.13287/j.1001-9332.201801.023
控失尿素对稻田氨挥发、氮素转运及利用效率的影响
Effects of loss-controlled urea on ammonia volatilization, N translocation and utilization efficiency in paddy rice
摘要
Abstract
With the common urea split application (CU) as the control,a field experiment was conducted to examine the effects of loss-controlled urea by split application (LCUS) and loss-controlled urea by basal application (LCUB) on ammonia volatilization (NH3),nitrogen (N) nutrition status,grain yield and N utilization efficiency in rice plants.The results showed that the ratio of NH3 volatilization loss to total N application were 15.8％,13.4％ and 19.7％ under the conditions of CU,LCUS and LCUB treatments,respectively.Compared to CU,LCUS significantly reduced the NH3 emission by 4.4 kg N · hm-2,with a decrease of 18.0％,while the LCUB significantly increased the NH3 emission by 7.2 kg N · hm-2,which increased by 24.7％.Compared to CU,LCUS increased the chlorophyll contents of leaf,the N content and N accumulation of seed and straw and grain yield,and significantly increased the N recovery efficiency by 7.6％,while significantly reduced the amount of N translocation,apparent N translocation rate and the rate of contribution to N in spike,respectively.However,compared to CU,LCUB significantly reduced the chlorophyll contents of leaf,the N content and accumulation of seed and straw as well as N utilization efficiency,but the grain yield,the amount of N translocation,apparent N translocation rate and the rate of contribution to N in spike were not affected.In conclusion,LCUS could maintain stable production,as well as decrease NH3 emission,improve N nutrition status and increase N utilization efficiency in rice plants.关键词
控失尿素/水稻/氨挥发/氮肥利用效率Key words
loss-controlled urea/rice/ammonia volatilization/N utilization efficiency引用本文复制引用
薛欣欣,吴小平,张永发,罗雪华,邹碧霞,王大鹏,王文斌..控失尿素对稻田氨挥发、氮素转运及利用效率的影响[J].应用生态学报,2018,29(1):133-140,8.基金项目
本文由农业部植物营养与肥料学科群开放基金项目(APF2015038)资助 This work was supported by the Open Fund for discipline group of Plant Nutrition and Fertilizer Science,Ministry of Agriculture,China (APF2015038). （APF2015038）
