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控释尿素与普通尿素配施对冬小麦氮肥利用率的影响
引用本文:杨雯玉,贺明荣,王远军,王晓英,张宾,吴翠平.控释尿素与普通尿素配施对冬小麦氮肥利用率的影响[J].植物营养与肥料学报,2005,11(5):627-633.
作者姓名:杨雯玉  贺明荣  王远军  王晓英  张宾  吴翠平
作者单位:1.山东农业大学农学院 山东省作物生物学重点实验室 山东泰安271018;
摘    要:在高肥力麦田中,随着氮肥施用量的不断增加,氮肥利用率下降,单位氮肥的增产量递减。氮素养分的损失不仅造成肥料的浪费,而且给环境带来潜在的威胁。为了提高氮肥的增产效益及氮肥利用率,减少氮肥对环境的污染,采用田间小区试验,研究了控释尿素和普通尿素配施对冬小麦产量、蛋白质含量、氮肥利用率及土壤硝态氮积累量的影响。结果表明,控释尿素与普通尿素配施与普通尿素单施相比,无论是相同施氮量还是减少30%的施氮量,冬小麦子粒产量都极显著增加,而且子粒蛋白质含量明显提高或不降低;同时提高了氮肥利用率,降低了土壤中硝态氮的积累量。

关 键 词:控释尿素    冬小麦    硝态氮积累量    氮素利用率
文章编号:1008-505X(2005)05-0627-07
收稿时间:2004-10-08
修稿时间:2004-12-23

Effect of controlled-release urea combined application with urea on nitrogen utilization efficiency of winter wheat
YANG Wen-yu,HE Ming-rong,WANG Yuan-jun,WANG Xiao-ying,ZHANG Bin,WU Cui-ping.Effect of controlled-release urea combined application with urea on nitrogen utilization efficiency of winter wheat[J].Plant Nutrition and Fertilizer Science,2005,11(5):627-633.
Authors:YANG Wen-yu  HE Ming-rong  WANG Yuan-jun  WANG Xiao-ying  ZHANG Bin  WU Cui-ping
Institution:1.Agronomy College;Shandong Agric. Univ.;Shandong Key Lab. of Crop Biology;Taian 271018;China;
Abstract:In rich fields, with the rising of application rate of nitrogen fertilizer, both the utilization efficiency and unit production rate of nitrogen fertilizer declined. The loss of N not only waste the fertilizer but also bring about a high potential risk of environmental pollution. Aiming to increase the crop production and N utilization, a field plot experiment was conducted to study the effects of combination application of conventional urea with controlled-release urea on grain yield, grain protein content, nitrogen utilization efficiency of winter wheat and accumulation of NO~-_3-N in soil. The results showed that combination applications of conventional urea with controlled-release urea, no matter was the N rate equivalent to or 30% less than that of single conventional N, could increase grain yield significantly and raised grain protein content markedly or maintain same in comparison with single application of conventional urea. Meanwhile, nitrogen utilization efficiency was improved and accumulation of NO~-_3-N in soil was reduced markedly.
Keywords:release-controlled urea  winter wheat  NO~-_3-N accumulation  nitrogen utilization efficiency
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