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当前位置: 首页 > 文章 > 控释尿素不同施用条件下冬小麦产量和氮素利用效应 农业资源与环境学报 2014 (01) 38-44
Position: Home > Articles > Effects of Controlled Release Urea on Wheat Yield and Nitrogen Utilization Efficiency Under Different Applied Conditions Journal of Agricultural Resources and Environment 2014 (01) 38-44

控释尿素不同施用条件下冬小麦产量和氮素利用效应

作  者：
夏伟光;武际;高凤梅;王允青;郭熙盛
单  位：
安徽农业大学资源与环境学院;安徽农业大学理学院;安徽省农业科学院土壤肥料研究所
关键词：
包膜控释尿素;产量;氮素利用效应;经济效益;冬小麦
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。
译  名：
Effects of Controlled Release Urea on Wheat Yield and Nitrogen Utilization Efficiency Under Different Applied Conditions
作  者：
XIA Wei-guang;WU Ji;GAO Feng-mei;WANG Yun-qing;GUO Xi-sheng;College of Resource and Environment, Anhui Agricultural University;Laboratory of Nutrient Cycling,Resources and Environment of Anhui;Institute of Soil and Fertilizer,Anhui Academy of Agricultural Sciences;College of Science, Anhui Agricultural University;
关键词：
coated controlled-release urea(CRU);;yield;;Nitrogen utilization;;economic benefit;;winter wheat
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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