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作 者 ：司东霞, 崔振岭, 胡树文, 陈新平, 张福锁

期 刊 ：植物营养与肥料学报 2010年 16卷 6期 页码：1492-1496

关键词：包膜尿素；移栽玉米；生长；养分吸收；

Keywords:coated urea, transplanted maize, growth, nutrient uptake,

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 200400 mg/plant，该用量下，移栽时单株可携带N 137290 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。

Abstract: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.

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