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控释尿素对玉米产量、氮肥利用率及土壤氮素的影响
引用本文:曹宁,陈志怡,闫飞,杨振明. 控释尿素对玉米产量、氮肥利用率及土壤氮素的影响[J]. 吉林农业大学学报, 2012, 34(1): 86-89
作者姓名:曹宁  陈志怡  闫飞  杨振明
作者单位:1. 吉林大学植物科学学院,长春,130062
2. 毕节职业技术学院,毕节,551700
基金项目:吉林省科技发展计划项目(20060579)
摘    要:采用田间试验,研究了施用硅藻土为载体的控释尿素对玉米不同生育期地上部生物量、吸氮量以及土壤尿酶活性、硝态氮和铵态氮含量及产量和氮肥利用率的影响.结果表明:与普通尿素一次性施用相比,控释尿素能提高玉米生长后期地上部生物量和吸氟量,抑制脲酶活性,维持土壤氮素水平,提高玉米产量和氮肥利用率,其效果与普通尿素分次施用相当.尿素分次施用和控释尿素处理分别比尿素一次性施用处理产量增加23.48%和17.70%,氮肥利用效率提高17.33%和17.58%,这说明以硅藻土为载体的控释尿素替代普通尿素,一次性基施的施肥方式替代基肥加追肥是可行的,能达到省工、增效的目的.

关 键 词:控释尿素  土壤脲酶活性  速效氮  玉米产量
收稿时间:2011-01-16

Effect of Control Release Urea on Spring Maize Yield, N Use Efficiency and SoilNitrogen
CAO Ning , CHEN Zhi-yi , YAN Fei , YANG Zhen-ming. Effect of Control Release Urea on Spring Maize Yield, N Use Efficiency and SoilNitrogen[J]. Journal of Jilin Agricultural University, 2012, 34(1): 86-89
Authors:CAO Ning    CHEN Zhi-yi    YAN Fei    YANG Zhen-ming
Affiliation:1.College of Plant Science,Jilin University,Changchun 130062,China;2.Bijie Polytechnic Normal University,Bijie 551700,China
Abstract:The experiments were conducted to investigate the effects of single basal application of control release urea with kieselguhr as the carrier on rate of yield of maize,shoot dry weight and N uptake of maize in different growth stages,NH4+-N and NO3——N of soil.The results show that control release urea application could increase shoot dry weight and N use efficiency of maize,inhibit urease activity of soil and maintain soil NH4+-N and NO3——N during the late growth stage.The treatments of twice fertilization and control release urea could increase yield by 23.48% and 17.70%,improve N use efficiency by 17.33% and 17.58%,respectively.Therefore,the control release urea in this study can be used by single basal application to maize production system,and help to change twice fertilization(basal and dressing) to once fertilization(basal),and thus benefit to labor-saving and improve nitrogen utilization efficiency.
Keywords:control release urea  soil urease activity  available nitrogen  maize yield
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