摘要
采用室内培养方法,研究秸秆不同还田方式土壤中加入无机氮肥和玉米秸秆对无机氮转化的影响。在田间秸秆不同还田处理的土壤中加入氮肥(硫酸铵)培养,初期土壤NH_4^+-N的含量较高,随着培养时间延长,NH_4^+-N的含量下降,培养15天后NH_4^+-N的含量趋于平衡;而土壤中NO_3^--N含量在培养期间逐渐增加,培养30天后NO_3^--N含量趋于平衡;秸秆不同还田处理土壤中添加秸秆培养,粉碎还田处理的土壤中NH_4^+-N的含量在整个培养过程中处于最低,培养后期覆盖还田和高茬还田的土壤NH_4^+-N的含量略有下降。
The experiment was conducted to determine the effects of corn stalk and inorganic N fertilizer incorporation in different types of stalk-returning soil on NH_4^+-N and NO_3^--N dynamics by chamber incubation. In fertilizer (sulfate ammonium) incorporation incubation test,at the initial stage,the NH_4^+-N content is high in different types of corn stalk-returning soil,with incubation time,the content of NH_4^+-N drops and tends to the balance after the 15 days.However,the content of NO_3^-N increases gradually during incubation and tends to the balance after 30 days.In stalk addition test,the content of NH_4^+-N is the lowest in the crash soil,and in mulch and high stubble treatment drop at the end of incubation.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2007年第S2期275-277,共3页
Journal of Liaoning Technical University (Natural Science)
基金
中国科学院知识创新工程青年人才领域前沿项目资助(07SBS11BS3)
辽中省农业节水重点室开放基金资助项目(SNYJSZDSJJ4)
关键词
秸秆还田
无机氮
铵态氮
硝态氮
corn stalk-returning soil
inorganic nitrogen
NH_4^+-N
NO_3-N
