【摘要】 用盆栽法研究了不同氮肥对韭菜生长、叶绿素总量、硝酸盐含量及营养品质的影响。研究结果表明,完全使用铵态氮会抑制韭菜的生长,降低产量;随着硫酸铵的浓度增大,硝酸盐含量逐渐减少,但可溶性糖含量却呈先上升后下降的趋势;提高硝酸钙浓度,可明显提高维生素C含量和叶绿素的总量,但可溶性蛋白却下降;尿素可明显提高产量和可溶性蛋白的含量。综合比较,当硫酸铵、硝酸钙、尿素浓度分别为0.4%,0.6%,0.6%时,韭菜产量高且硝酸盐含量低,品质好。更多还原

【Abstract】 Potted experiments were used to study the effects of different nitrogen fertilizers on the growth,total chlorophyll content,nitrate content and nutritive quality of the Chinese chive.The results showed that NH4+-N inhibited the growth and reduced the yield of Chinese chive.Nitrate content decreased gradually as the ammonium sulfate concentration increased,but soluble sugar had a low-high-low change.Calcium nitrate increased Vitamine C and total chlorophyll significantly,while decreased soluble protein content.Urea could produce higher yield and soluble protein considerably.更多还原