摘要
研究了硫包膜尿素对土壤性质和玉米生长的影响。结果表明,在玉米生长期内,硫包膜尿素可以显著增加土壤有效硫含量。与普通尿素相比,硫包膜尿素能够显著增加土壤水溶性SO42-含量,但在玉米成熟期不会显著酸化土壤。施用硫包膜尿素比普通尿素能够显著增加玉米叶绿素含量、株高和产量,但是硫膜对促进玉米叶绿素和株高增长作用有限,持续供氮是玉米叶绿素和株高增长的主要原因。在高、低量施肥水平下,硫包膜尿素处理比普通尿素处理2008年分别增产10.19%和15.23%,2009年分别增产10.94%和41.34%。低量施氮时硫膜能显著增产,而高量施氮时氮素的控释作用是显著增产的主要原因。
Experiment was conducted to study the effects of sulfur coated urea（SCU）on soil properties and growth of maize.The results indicated that,in growth stage of maize,SCU was able to increase active SO4^2-of soil significantly.Compared with common urea,SCU was able to increase water-solution SO4^2-significantly,but it did not cause acidification of soil significantly in maturity stage of maize.In addition,SCU was able to increase chlorophyll,height and grain yield of maize significantly.But sulfur-coating was limited in increasing chlorophyll and height of maize,and keeping supplying nitrogen was the reason of increasing chlorophyll and height.Compared with urea treatments,grain yield of high and low SCU treatments increased 10.19% and 15.23% in 2008,and increased 10.94% and 41.34% in 2009 respectively.When applying low nitrogen,sulfur-coating increased grain yield of maize significantly,but with high nitrogen,controlled release activity became the most important reason.
出处
《水土保持学报》
CSCD
北大核心
2010年第2期227-231,共5页
Journal of Soil and Water Conservation
基金
国家自然科学基金(30871593)
国家"十一五"科技支撑计划(2007BAD31B04
2006BAD10B07)
关键词
硫包膜尿素
硫膜
有效硫
玉米
sulfur coated urea （SCU）
sulfur-coating
active SO42-
maize
作者简介
宗晓庆（1984--），男，山东枣庄人，硕士生，研究方向为土壤肥料与植物营养。E-mail：suoyi23@163．com
通讯作者：张民（1958-），男，教授，主要从事土壤肥料方面的研究。E-mail：mzhang@sdau．edu．cn
