期刊论文

Wang, P.

中文

生态学报

1000-0933

2008

28

10

4919-4928

10.3321/j.issn:1000-0933.2008.10.037

国家自然科学基金资助项目（30471015,30571089）； 国家科技支撑计划资助项目（2006BAD17B05,2006BAD02A13-2）~~；

本校为第一机构

通过连续2a的大田试验,比较研究了尿素与包膜尿素对夏播玉米郑单958和农大108产量、水分利用效率(WUE)、氮肥利用率(NUE)与土壤无机氮动态的影响,结果表明:产量与WUE随施氮量增大而增大,两种氮肥间差异不显著;包膜尿素NUE较尿素高,2004年郑单958 N 90 kg/hm2与农大108 N 180 kg/hm2条件下提高显著;施氮对土壤无机氮动态的影响具有年际间差异:2004年不施氮条件下一般呈"V"型变化趋势,施氮使其向"N"型或倒"V"型转变,而2005年施氮与不施氮条件下均呈"N"型变化趋势;施氮使土壤无机氮含量明显提高,包膜尿素较尿素效果更明显;土壤无机氮含量,包膜尿素处理以表土层最高,而尿素处理,特别是尿素N 180 kg/...

A two-year field experiment was conducted to study the effects of two types of nitrogen fertilizers (urea; coated urea, CU) on maize yield, water use efficiency (WUE), nitrogen use efficiency (NUE) and dynamics of soil N min content (DSNC) in 2004 and 2005. Two summer maize cultivars, Zhengdan958 and ND108, were applied. The results showed that yield and WUE were increased by the increase of N input, but no significant difference was observed between urea and CU treatments. NUE of maize under CU treatment was higher than that under urea treatment, especially the diffefrence was significant und...