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当前位置: 首页 > 文章 > 控释尿素对小麦-玉米产量及土壤氮素的影响 农业环境科学学报 2010,29 (09) 1744-1749
Position: Home > Articles > Effects of Controlled-release Urea on Wheat-corn′s Yield and Soil Nitrogen Journal of Agro-Environment Science 2010,29 (09) 1744-1749

控释尿素对小麦-玉米产量及土壤氮素的影响

作  者：
于淑芳;杨力;张民;吴文良;巨晓棠;田叶
单  位：
山东农业大学;山东省农科院土壤肥料研究所;中国农业大学
关键词：
小麦;玉米;控释尿素;土壤氮素
摘  要：
利用田间试验研究了包膜控释尿素对小麦-玉米产量、氮素利用效率、土壤氮素积累及移动的影响。结果表明,与施用普通尿素比较,小麦-玉米周年施用包膜控释尿素,在肥料用量减少20%和40%情况下,小麦-玉米总产量分别是100%普通尿素处理的97.4%和97.7%;控释尿素施氮量为60%处理的肥料农艺利用率和偏生产力分别比普通尿素提高11.57%和54.14%。控释尿素施氮量为80%处理的肥料农艺利用率和偏生产力分别提高6.40%和22.09%。施用控释尿素显著增加了0~20 cm土层的碱解氮和0～40cm土层的硝态氮含量;60~100 cm土层中,控释氮肥处理土壤硝态氮含量与不施氮肥处理差异不显著,普通尿素处理小麦收获后60～80 cm土层、玉米收获后60～100 cm土壤硝态氮显著高于不施氮肥处理,肥料氮素下移明显。试验结果显示,施用控释尿素增加了耕层(0～20 cm)土壤的氮素积累,减少了氮素向土壤深层移动的数量,有利于减少施肥对环境的不利影响。
译  名：
Effects of Controlled-release Urea on Wheat-corn′s Yield and Soil Nitrogen
作  者：
YU Shu-fang1,YANG Li1,ZHANG Min2,WU Wen-liang3,JU Xiao-tang3,TIAN Ye1(1.Institute of Soil and Fertilizer,SAAS,Jinan 250100,China;2.Shandong Agricultural University,Taian,271018,China;3.China Agricul-tural University,Beijing 100193,China)
关键词：
wheat;corn;controlled-release urea;soil nitrogen
摘  要：
The effects of controlled-release urea on wheat-corn′s yield,nitrogen use efficiency,soil nitrogen accumulation and movement were studied by field experiment.The results showed that the yield of wheat and corn were 97.4% and 97.7% respectively after applying con-trolled-release urea which quantity was decreased by 20% and 40% compared with that of general urea treatment.After applying controlled-release urea which amount was 60% of general urea,agronomic N use efficiency(ANUE)increased by 11.57% and partial factor productivity for applied fertilize(rPFP)increased by 54.14%.After applying controlled-release urea which amount was 80% of general urea,fertilizer a-gronomic utilization increased by 6.40% and partial factor productivity increased by 22.09%.Alkali-hydrolyzable(0～20 cm)nitrogen and soil nitrate(0～40 cm)were increased after applying controlled-release urea,soil nitrate(60～80 cm)had no significant difference between controlled-release urea and no nitrogen treatment,soil nitrate(60～80 cm,wheat block;60～100 cm,corn block)were increased compared with that of no nitrogen treatment,nitrogen moved obviously.Test results suggested that reducing controlled-release urea amount could in-crease nitrogen accumulation of upper soil,at the same time the amount of nitrogen which moved to soil depth was decreased.Therefore,re-ducing controlled-release urea amount was helpful to increasing the fertilizer′s adverse effect on environment.

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