控释氮肥不同用量对移栽玉米幼苗生长及养分吸收的影响  

Effects of controlled release N fertilizer application on seedling growth and nutrients uptake of transplanted maize

作　　者：司东霞[1,2] 崔振岭[1] 胡树文[1] 陈新平[1] 张福锁[1] 

机构地区：[1]中国农业大学资源与环境学院,北京100193 [2]聊城大学农学院,山东聊城252000

出　　处：《植物营养与肥料学报》2010年第6期1492-1496,共5页Journal of Plant Nutrition and Fertilizers

基　　金：国家科技支撑计划项目(2006BAD10B03;2006BAD10B08);973项目(2009CB118606)资助

摘　　要：通过盆栽试验,研究了控释氮肥不同用量对移栽玉米幼苗生长及养分吸收的影响。结果表明,玉米育苗期内适宜的控释氮素用量可形成健壮幼苗;其最大安全控释氮素用量为N 200-400 mg/p lant,该用量下,移栽时单株可携带N 137-290 mg。随控释氮肥用量的增加,植株地上部氮素浓度及氮素累积量增加;磷素的浓度及累积量与控释氮肥的用量没有显著相关性;控释氮肥的供应抑制了植株对钾的吸收。Effects of controlled release N fertilizer application rate on seedling growth and nutrients uptake of transplanted maize were tested in this study.The results showed that healthy seedlings could be produced with proper controlled release N（CRN） used;N 200-400 mg/plant was a range of safe and maximum CRN application rates which improved seedling growth,meanwhile,N 137-290 mg/plant could be maintained in seedling medium at transplanting time.N concentration and N content of plant shoot increased with CRN application rate increase.No significant correlation was found between CRN application rate and P concentration or content.K uptake of plant was restrained by CRN application.

关 键 词：包膜尿素 移栽玉米 生长 养分吸收 

分 类 号：S145.5[农业科学—肥料学] S513.01[农业科学—农业基础科学]