摘要： 通过田间试验,研究了包膜尿素减量施用对马铃薯产量及品质的影响。结果表明,与习惯施肥相比,适量减量施用包膜尿素能较好地保证马铃薯产量、叶片叶绿素含量及提高马铃薯品质。在产量方面,以80%硫加树脂包膜尿素增产效果最好,增产幅度为13.14%;在马铃薯叶片叶绿素含量方面,以100%速效尿素及80%速效尿素处理效果较好,且两者差异不显著;在马铃薯品质方面,80%硫加树脂包膜尿素处理的马铃薯淀粉含量最高,达16.85%,处理的硝酸盐含量最低,仅为20.89 mg/kg,明显提高了马铃薯品质。

关键词: 包膜尿素, 马铃薯, 肥料减量化, 产量, 品质

Abstract: Effects of decreasing coated urea application on potato's yield and quality were studied by field experiments.The results indicated that decreasing coated urea appropriately could increase potato's yield compared with traditional fertilizer,chlorophyll content of leaves and quality.The best treatment in potato's yield was 80% peucine-sulfur coated urea(80% PSCU) and it could increased yield 13.14%.100% AU and 80% AU were better in chlorophyll content of potato's leaves,and different between the two treatments and other coated urea treatment was not significant.80% PSCU was the best of all treatments in potato's quality,potato's starch content was 16.85% and was the highest,potato's nitrite content was 20.89 mg/kg and was the least.

Key words: Coated urea, Potato, Fertilizer decrement, Yield, Quality

中图分类号: 

• S145.5