文章摘要
控释尿素不同施用条件下冬小麦产量和氮素利用效应
Effects of Controlled Release Urea on Wheat Yield and Nitrogen Utilization Efficiency Under Different Applied Conditions
投稿时间:2013-10-26  
DOI:10.13254/j.jare.2013.0185
中文关键词: 包膜控释尿素  产量  氮素利用效应  经济效益  冬小麦
英文关键词: coated controlled-release urea(CRU)  yield  Nitrogen utilization  economic benefit  winter wheat
基金项目:安徽省农业科学院学科建设项目(13A1003);公益性行业科研专项(201203013);国家“十二五”科技支撑计划重点项目(2011BAD16B06)
作者单位E-mail
夏伟光 安徽农业大学资源与环境学院, 安徽 合肥 230031
安徽省农业科学院土壤肥料研究所, 安徽 合肥 230031 
 
武际 安徽养分循环与资源环境省级实验室, 安徽 合肥 230031
安徽省农业科学院土壤肥料研究所, 安徽 合肥 230031 
 
高凤梅 安徽农业大学理学院, 安徽 合肥 230031  
王允青 安徽养分循环与资源环境省级实验室, 安徽 合肥 230031  
郭熙盛 安徽养分循环与资源环境省级实验室, 安徽 合肥 230031
安徽省农业科学院土壤肥料研究所, 安徽 合肥 230031 
1078681598@qq.com 
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中文摘要:
      采用田间试验方法研究了控释尿素不同施用条件对冬小麦产量、氮素利用和经济效益的影响。试验共设7个处理,即CK(空白处理,不施氮肥)、100%PU10/0(普通尿素全量基施,N 240 kg·hm-2)、100%PU6/4(60%的普通尿素基施、40%的普通尿素于拔节期追施,N 240 kg·hm-2)、80%PU6/4(60%的普通尿素基施、40%的普通尿素于拔节期追施,N 192 kg·hm-2))、100%CRU(全量树脂包膜控释尿素基施,N 240 kg·hm-2))、80%CRU(80%树脂包膜控释尿素基施,N 192 kg·hm-2))和40%CRU+40%PU(40%树脂包膜控释尿素+40%的普通尿素基施,N 192 kg·hm-2)。结果表明,无论是产量效应还是氮素利用效应,树脂包膜控释尿素(CRU)处理总体优于普通尿素(PU)处理,尤其树脂包膜控释尿素和普通尿素配施(40%CRU+40%PU)效果最佳,以7 709 kg·hm-2)的产量、36.44%的氮肥吸收利用率、15 946元·hm-2)的相对净收入达到处理间最高水平。该处理在减少氮素投入量的情况下,不仅促进了冬小麦增产,而且显著提高了肥料的利用率,拥有较高的产投比。因此,树脂包膜控释尿素和普通尿素的配施处理(40%CRU+40%PU)是本试验条件下最优的氮肥处理。
英文摘要:
      The field trial was conducted to study the effects of different nitrogen fertilizer applications on winter wheat yield, nitrogen utilization efficiency and economic benefit. 7 treatments were designed as CK(no nitrogen fertilizer applied), 100%PU10/0(conventional urea applied before sowing, N rate was 240 kg·hm-2), 100%PU6/4(conventional urea applied before sowing and at jointing with the ratio of 6∶4, N rate was 240 kg·hm-2), 80%PU6/4(conventional urea applied before sowing and at jointing with the ratio of 6∶4, N rate was 192 kg·hm-2), 100%CRU(resin coated controlled release urea applied before sowing, N rate was 240 kg·hm-2), 80%CRU(resin coated controlled release urea applied before sowing, N rate was 192 kg·hm-2), and 40%CRU+40%PU(resin coated controlled release urea and conventional urea applied before sowing, N rate was 192 kg·hm-2). The results showed that no matter on the efficiency of yield or that of nitrogen, resin coated controlled-release urea(CRU) was better when compared with conventional urea(PU). Especially, the combined application treatment(40%CRU+40%PU)was the best with achieving the highest wheat yield of 7 709 kg·hm-2, the highest N fertilizer utilization efficiency of 36.44% and the maximum net income of 15 946 yuan·hm-2. And it could not only increase winter wheat yield with reducing the nitrogen fertilizer application, but also improve N fertilizer utilization efficiency and owe the highest ratio of output to input. Therefore, the combined application of the resin coated controlled-release urea and conventional urea(40%CRU+40%PU)was the optimal nitrogen fertilizer treatment under the conditions of this experiment.
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