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控释氮肥对苹果幼树生长的影响
引用本文:宋立芬,孙治军,丁强.控释氮肥对苹果幼树生长的影响[J].山东农业科学,2009(1):78-81.
作者姓名:宋立芬  孙治军  丁强
作者单位:中国农业大学烟台研究院,山东烟台,264670
基金项目:中国农业大学烟台研究院青年学者研究基金 
摘    要:控释氮肥的实验室静水释放试验、田间小区试验表明,氮素的释放速率分为增加、高峰、减小3个阶段。田间试验结果表明,与普通尿素相比,控释氮肥对养分持续、稳定的供应满足了苹果幼树在整个生长期内对养分的需求,促进了果树的生长。相对于普通尿素处理(纯N0.2kg/株),在少施一半氮的情况下,控释肥低量处理(纯N0.1kg/株)的土壤氮素供应和果树生长情况仍与尿素处理无差异。

关 键 词:控释氮肥  苹果  幼树

Effects of Controlled Release Nitrogen Fertilizer on Young Apple Trees
SONG Li-fen,SUN Zhi-jun,DING Qiang.Effects of Controlled Release Nitrogen Fertilizer on Young Apple Trees[J].Shandong Agricultural Sciences,2009(1):78-81.
Authors:SONG Li-fen  SUN Zhi-jun  DING Qiang
Institution:Yantai College of China Agricultural University;Yantai 264670;China
Abstract:The laboratory and field experiments showed that three release stages were found in nitrogen release curve of controlled release nitrogen fertilizer: increasing stage,peak stage and decreasing stage.The results of field experiment showed that controlled release nitrogen fertilizer could meet the nitrogen requirements of young apple trees during the growth period and promote the trees growth.There was no difference in growth between the urea treatment(N 0.2 kg per tree) and the lower controlled release ferti...
Keywords:Controlled release nitrogen fertilizer  Apple  Young tree  
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